{"product_id":"durston-1301-ring-stretcher-reducer-6-spline-16-hole","title":"Durston 1301 Ring Stretcher \u0026 Reducer - 148.325","description":"\u003ch2\u003eDurston 1301 Ring Stretcher \u0026amp; Reducer - 148.325\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eDurston 1301 Ring Stretcher \u0026amp; Reducer\u003c\/strong\u003e is a professional-grade upright tool made in England for stretching and reducing plain wedding ring bands with precision and ease. Built for daily bench use, this sturdy unit requires no maintenance and delivers consistent results on non-ferrous metal bands.\u003c\/p\u003e\n\u003cp\u003eThe tool features a \u003cstrong\u003e6-spline stretching mandrel\u003c\/strong\u003e that expands on the upstroke of the handle, allowing smooth, controlled stretching of plain, non-stone-set wedding bands. The mandrel is marked in \u003cstrong\u003eUSA sizes 2 to 14\u003c\/strong\u003e for quick reference during sizing work. A \u003cstrong\u003edouble-sided 16-hole band reducing plate\u003c\/strong\u003e is included, accommodating most popular domed-shaped bands for compression and reduction.\u003c\/p\u003e\n\u003cp\u003eThe base includes four mounting holes for securing the unit to a bench or worktable for added stability during use. Mounting hardware is not included.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eFor use with non-ferrous metals only (gold, silver, platinum, palladium, etc.). Not suitable for stretching or reducing steel bands. No instructions are included with this tool.\u003c\/em\u003e\u003c\/p\u003e\n\u003ch5\u003eFeatures\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003eUpright ring stretcher and reducer design for bench-top use\u003c\/li\u003e\n\u003cli\u003e6-spline mandrel expands on the upstroke for controlled band stretching\u003c\/li\u003e\n\u003cli\u003eMandrel marked in USA ring sizes 2 to 14\u003c\/li\u003e\n\u003cli\u003eDouble-sided 16-hole band reducing plate for domed-shaped bands\u003c\/li\u003e\n\u003cli\u003eFour base mounting holes for secure bench or worktable attachment\u003c\/li\u003e\n\u003cli\u003eNo maintenance required\u003c\/li\u003e\n\u003cli\u003eMade in England\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003eSpecifications\u003c\/h5\u003e\n\u003cstyle type=\"text\/css\"\u003e\n.tg  {border-collapse:collapse;border-spacing:0;}\n.tg td{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px;\n  overflow:hidden;padding:10px 5px;word-break:normal;}\n.tg th{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px;\n  font-weight:normal;overflow:hidden;padding:10px 5px;word-break:normal;}\n.tg .tg-cly1{text-align:left;vertical-align:middle}\n.tg .tg-wa1i{font-weight:bold;text-align:center;vertical-align:middle}\n\u003c\/style\u003e\n\u003ctable class=\"tg\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth class=\"tg-wa1i\"\u003eModel\u003c\/th\u003e\n\u003cth class=\"tg-cly1\"\u003eDurston 1301\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-wa1i\"\u003eHeight\u003c\/td\u003e\n\u003ctd class=\"tg-cly1\"\u003e16-3\/4 in (425 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-wa1i\"\u003eBase Footprint\u003c\/td\u003e\n\u003ctd class=\"tg-cly1\"\u003e6-3\/4 in × 4-3\/4 in (170 mm × 120 mm), oval\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-wa1i\"\u003eMandrel Type\u003c\/td\u003e\n\u003ctd class=\"tg-cly1\"\u003e6-spline stretching mandrel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-wa1i\"\u003eSize Range (Mandrel)\u003c\/td\u003e\n\u003ctd class=\"tg-cly1\"\u003eUSA sizes 2–14\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-wa1i\"\u003eReducing Plate\u003c\/td\u003e\n\u003ctd class=\"tg-cly1\"\u003eDouble-sided, 16 holes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-wa1i\"\u003eCompatible Metals\u003c\/td\u003e\n\u003ctd class=\"tg-cly1\"\u003eNon-ferrous metals only (gold, silver, platinum, palladium, etc.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-wa1i\"\u003eMounting Holes\u003c\/td\u003e\n\u003ctd class=\"tg-cly1\"\u003e4 (mounting hardware not included)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-wa1i\"\u003eOrigin\u003c\/td\u003e\n\u003ctd class=\"tg-cly1\"\u003eMade in England\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch5\u003eIncluded\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003eDurston 1301 Ring Stretcher \u0026amp; Reducer\u003c\/li\u003e\n\u003cli\u003e6-spline stretching mandrel\u003c\/li\u003e\n\u003cli\u003eDouble-sided 16-hole band reducing plate\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003eWhat our Experts Think\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli data-section-id=\"tpw2di\" data-start=\"69\" data-end=\"282\"\u003e\n\u003cstrong data-start=\"71\" data-end=\"118\"\u003eProfessional Dual-Function Ring Sizing Tool\u003c\/strong\u003e\u003cbr data-start=\"118\" data-end=\"121\"\u003eThe Durston 1301 is designed to both \u003cstrong data-start=\"160\" data-end=\"193\"\u003estretch and reduce ring sizes\u003c\/strong\u003e accurately, making it essential for jewellery repair, resizing, and workshop production.\u003c\/li\u003e\n\u003cli data-section-id=\"119ri39\" data-start=\"284\" data-end=\"472\"\u003e\n\u003cstrong data-start=\"286\" data-end=\"323\"\u003ePrecision 6-Spline Mandrel System\u003c\/strong\u003e\u003cbr data-start=\"323\" data-end=\"326\"\u003eUses a hardened 6-spline expanding mandrel to gradually stretch plain non-ferrous metal rings with controlled, even force—minimizing distortion.\u003c\/li\u003e\n\u003cli data-section-id=\"1d8sue9\" data-start=\"474\" data-end=\"675\"\u003e\n\u003cstrong data-start=\"476\" data-end=\"526\"\u003e16-Die Reduction Plate for Accurate Downsizing\u003c\/strong\u003e\u003cbr data-start=\"526\" data-end=\"529\"\u003eIncludes a polished 16-hole reducing plate that allows controlled compression of bands up to \u003cstrong data-start=\"624\" data-end=\"638\"\u003e12mm width\u003c\/strong\u003e, ensuring consistent sizing results.\u003c\/li\u003e\n\u003cli data-section-id=\"5hysps\" data-start=\"677\" data-end=\"836\"\u003e\n\u003cstrong data-start=\"679\" data-end=\"716\"\u003eHeavy-Duty Cast Iron Construction\u003c\/strong\u003e\u003cbr data-start=\"716\" data-end=\"719\"\u003eBuilt for long-term workshop use, the rigid frame provides stability and durability under repeated pressure cycles.\u003c\/li\u003e\n\u003cli data-section-id=\"16r62sc\" data-start=\"838\" data-end=\"1002\"\u003e\n\u003cstrong data-start=\"840\" data-end=\"874\"\u003eGear-Assisted Effort Reduction\u003c\/strong\u003e\u003cbr data-start=\"874\" data-end=\"877\"\u003eIntegrated mechanical advantage system reduces operator force, making stretching and reducing smoother and more controlled.\u003c\/li\u003e\n\u003cli data-section-id=\"1i9tejr\" data-start=\"1004\" data-end=\"1163\"\u003e\n\u003cstrong data-start=\"1006\" data-end=\"1043\"\u003eBench-Mounted Professional Design\u003c\/strong\u003e\u003cbr data-start=\"1043\" data-end=\"1046\"\u003eSecure mounting base ensures stability during use, which is critical for accuracy and safety in ring resizing work.\u003c\/li\u003e\n\u003cli data-section-id=\"v0hlr7\" data-start=\"1165\" data-end=\"1321\"\u003e\n\u003cstrong data-start=\"1167\" data-end=\"1200\"\u003eIdeal for Jewellery Workshops\u003c\/strong\u003e\u003cbr data-start=\"1200\" data-end=\"1203\"\u003eBest suited for goldsmiths and repair specialists working with plain bands in gold, silver, platinum, and palladium.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003e\n\u003cbr\u003eQ\u0026amp;A\u003c\/h5\u003e\n\u003cp data-start=\"0\" data-end=\"219\"\u003e\u003cstrong data-start=\"0\" data-end=\"67\"\u003eQ: What is the Durston 1301 Ring Stretcher \u0026amp; Reducer (148.325)?\u003c\/strong\u003e\u003cbr data-start=\"67\" data-end=\"70\"\u003eA: It is a professional \u003cstrong data-start=\"94\" data-end=\"124\"\u003emanual ring sizing machine\u003c\/strong\u003e used in jewelry workshops to \u003cstrong data-start=\"154\" data-end=\"193\"\u003estretch or reduce plain metal rings\u003c\/strong\u003e with controlled pressure.\u003c\/p\u003e\n\u003cp data-start=\"221\" data-end=\"416\"\u003e\u003cstrong data-start=\"221\" data-end=\"248\"\u003eQ: What is it used for?\u003c\/strong\u003e\u003cbr data-start=\"248\" data-end=\"251\"\u003eA: It is used to \u003cstrong data-start=\"268\" data-end=\"322\"\u003eresize plain wedding bands and non-stone-set rings\u003c\/strong\u003e, allowing jewelers to increase or decrease ring size accurately without cutting or soldering.\u003c\/p\u003e\n\u003cp data-start=\"418\" data-end=\"625\"\u003e\u003cstrong data-start=\"418\" data-end=\"454\"\u003eQ: What metals can it work with?\u003c\/strong\u003e\u003cbr data-start=\"454\" data-end=\"457\"\u003eA: It is suitable for \u003cstrong data-start=\"479\" data-end=\"546\"\u003egold, silver, platinum, palladium, and other non-ferrous metals\u003c\/strong\u003e, but not for steel or stone-set rings. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"627\" data-end=\"819\"\u003e\u003cstrong data-start=\"627\" data-end=\"651\"\u003eQ: How does it work?\u003c\/strong\u003e\u003cbr data-start=\"651\" data-end=\"654\"\u003eA: It uses a \u003cstrong data-start=\"667\" data-end=\"712\"\u003e6-spline expanding mandrel for stretching\u003c\/strong\u003e and a \u003cstrong data-start=\"719\" data-end=\"771\"\u003emulti-hole reducing plate for compression sizing\u003c\/strong\u003e, operated by a hand lever for controlled force.\u003c\/p\u003e\n\u003cp data-start=\"821\" data-end=\"1019\"\u003e\u003cstrong data-start=\"821\" data-end=\"856\"\u003eQ: What is its main capability?\u003c\/strong\u003e\u003cbr data-start=\"856\" data-end=\"859\"\u003eA: It can \u003cstrong data-start=\"869\" data-end=\"910\"\u003eboth increase and decrease ring sizes\u003c\/strong\u003e while maintaining roundness and structural integrity of plain bands. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1021\" data-end=\"1165\"\u003e\u003cstrong data-start=\"1021\" data-end=\"1052\"\u003eQ: What is it designed for?\u003c\/strong\u003e\u003cbr data-start=\"1052\" data-end=\"1055\"\u003eA: It is designed for \u003cstrong data-start=\"1077\" data-end=\"1123\"\u003eprofessional jewelers and repair workshops\u003c\/strong\u003e that need fast, repeatable ring resizing.\u003c\/p\u003e\n\u003cp data-start=\"1167\" data-end=\"1377\"\u003e\u003cstrong data-start=\"1167\" data-end=\"1212\"\u003eQ: What is the main benefit of this tool?\u003c\/strong\u003e\u003cbr data-start=\"1212\" data-end=\"1215\"\u003eA: It provides \u003cstrong data-start=\"1230\" data-end=\"1292\"\u003eaccurate, mechanical ring resizing without heat or cutting\u003c\/strong\u003e, making ring adjustments faster, cleaner, and more consistent in a workshop setting.\u003c\/p\u003e\n\u003ch5\u003e\n\u003cbr\u003eMaintenance Tips\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli data-section-id=\"n3czoa\" data-start=\"152\" data-end=\"330\"\u003e\n\u003cstrong data-start=\"154\" data-end=\"185\"\u003eKeep mandrel and dies clean\u003c\/strong\u003e – Remove metal dust after every use to prevent scoring on the spline mandrel and reducing plate surfaces \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1f3rzmk\" data-start=\"331\" data-end=\"490\"\u003e\n\u003cstrong data-start=\"333\" data-end=\"361\"\u003eLight oil on steel parts\u003c\/strong\u003e – Apply a thin anti-rust coating on the mandrel and frame when idle; always wipe fully before use to avoid contaminating rings\u003c\/li\u003e\n\u003cli data-section-id=\"1dsi8o7\" data-start=\"491\" data-end=\"627\"\u003e\n\u003cstrong data-start=\"493\" data-end=\"520\"\u003eCheck die plate seating\u003c\/strong\u003e – Ensure the 16-hole reducing plate sits flat and locked to maintain accurate sizing and prevent binding\u003c\/li\u003e\n\u003cli data-section-id=\"a9cep3\" data-start=\"628\" data-end=\"753\"\u003e\n\u003cstrong data-start=\"630\" data-end=\"653\"\u003eAvoid forcing rings\u003c\/strong\u003e – Use gradual pressure only; excessive force can cause rings to jam or distort on spline mandrels\u003c\/li\u003e\n\u003cli data-section-id=\"1lla2pu\" data-start=\"754\" data-end=\"909\"\u003e\n\u003cstrong data-start=\"756\" data-end=\"781\"\u003eSecure bench mounting\u003c\/strong\u003e – Always bolt the unit firmly before use to prevent movement during leverage operations \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"bh155f\" data-start=\"910\" data-end=\"1037\"\u003e\n\u003cstrong data-start=\"912\" data-end=\"943\"\u003eUse only non-ferrous metals\u003c\/strong\u003e – Gold, silver, platinum, and palladium only; harder metals can damage the mandrel and dies\u003c\/li\u003e\n\u003cli data-section-id=\"wfkl7z\" data-start=\"1038\" data-end=\"1167\"\u003e\n\u003cstrong data-start=\"1040\" data-end=\"1069\"\u003eInspect splines regularly\u003c\/strong\u003e – Look for wear or burrs on the 6-spline mandrel and polish lightly if needed for smooth travel\u003c\/li\u003e\n\u003cli data-section-id=\"85cp9e\" data-start=\"1168\" data-end=\"1289\"\u003e\n\u003cstrong data-start=\"1170\" data-end=\"1201\"\u003eKeep dry storage conditions\u003c\/strong\u003e – Prevent rust formation on precision steel components, especially in humid workshops\u003c\/li\u003e\n\u003cli data-section-id=\"uw2icf\" data-start=\"1290\" data-end=\"1398\"\u003e\n\u003cstrong data-start=\"1292\" data-end=\"1317\"\u003eDo not over-lubricate\u003c\/strong\u003e – Excess oil can contaminate rings and reduce grip during reduction operations\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Durston","offers":[{"title":"Default Title","offer_id":45504305070271,"sku":"148.325","price":350.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0683\/5703\/0079\/files\/durston-1301-ring-stretcher-and-reducer-otto-frei.jpg?v=1776342641","url":"https:\/\/www.mybackyardzone.com\/products\/durston-1301-ring-stretcher-reducer-6-spline-16-hole","provider":"Your Outdoor Setup Starts Here","version":"1.0","type":"link"}