{"product_id":"grs-004-735-inside-diameter-ring-holder-20-mandrels","title":"GRS 004-735 Inside Diameter Ring Holder With 20 Mandrels","description":"\u003cp\u003eThe GRS 004-735 Inside Diameter (ID) Ring Holder with 20 Mandrels is a significant upgrade over the original GRS ID Ring Holder, engineered to give jewelers, engravers, and stone setters unrestricted access to a ring's full circumference while holding it securely from the inside. The key advancement in this new design is the ability to choose between two distinct holding actions: adjustable tension or firm locking — a capability the original single-tension model did not offer.\u003c\/p\u003e\u003cp\u003eUse the included \u003cstrong\u003estandard cone\u003c\/strong\u003e for adjustable tension, allowing the ring to rotate smoothly during engraving. Switch to the \u003cstrong\u003elocking cone\u003c\/strong\u003e to lock the ring completely rigid — ideal for pavé and standard stone setting where zero movement is essential. This versatility in a single tool body makes the GRS ID Ring Holder exceptionally adaptable across bench tasks.\u003c\/p\u003e\u003cp\u003eThis version includes \u003cstrong\u003e2 complete sets of 10 expanding mandrels\u003c\/strong\u003e (20 total), covering a wider size range than the original 7-collet set. Two mandrels of each size are provided, so you always have a backup at every diameter. The ring holder body is made of \u003cstrong\u003esteel\u003c\/strong\u003e and mounts in a vise or engraving block. \u003cstrong\u003eNot for use in a BenchMate.\u003c\/strong\u003e Made in the USA.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eHolds rings from the inside, providing unrestricted access to the full circumference\u003c\/li\u003e\n\u003cli\u003eChoose between adjustable tension (standard cone) or rigid locking action (locking cone)\u003c\/li\u003e\n\u003cli\u003eIncludes 20 expanding mandrels — 2 sets of 10, covering 13.5mm–22.5mm inside diameters\u003c\/li\u003e\n\u003cli\u003eNew mandrel design covers a wider size range than the original 7-collet style\u003c\/li\u003e\n\u003cli\u003eLonger hex nut included for extending the ring mandrel when extra clearance is needed\u003c\/li\u003e\n\u003cli\u003eSteel body mounts in a vise or engraving block\u003c\/li\u003e\n\u003cli\u003eSuitable for engraving, pavé setting, and standard stone setting\u003c\/li\u003e\n\u003cli\u003eNot for use in a BenchMate\u003c\/li\u003e\n\u003cli\u003eMade in the USA\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003ctd\u003e004-735 (GRS 104.735)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBody Material\u003c\/th\u003e\n\u003ctd\u003eSteel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMandrel Count\u003c\/th\u003e\n\u003ctd\u003e20 (2 sets of 10)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMandrel Size Range\u003c\/th\u003e\n\u003ctd\u003e13.5mm–22.5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMounting\u003c\/th\u003e\n\u003ctd\u003eVise or engraving block\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBenchMate Compatible\u003c\/th\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCountry of Origin\u003c\/th\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eWhat's Included\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eRing Holder Body (available separately as 104.754)\u003c\/li\u003e\n\u003cli\u003e20 Expanding Mandrels — 2 each of the following sizes: 13.5mm, 14.5mm, 15.5mm, 16.5mm, 17.5mm, 18.5mm, 19.5mm, 20.5mm, 21.5mm, 22.5mm\u003c\/li\u003e\n\u003cli\u003e2 Standard Cones\u003c\/li\u003e\n\u003cli\u003e2 Locking Cones\u003c\/li\u003e\n\u003cli\u003eDrawbar\u003c\/li\u003e\n\u003cli\u003eDrawbar Knob\u003c\/li\u003e\n\u003cli\u003eHex Nut (extended length for extra clearance)\u003c\/li\u003e\n\u003cli\u003eGRS Hex Wrench\u003c\/li\u003e\n\u003cli\u003eInstructions\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eNotes\u003c\/h3\u003e\u003cp\u003eThe complete mandrel set (all red-listed parts) is available separately as GRS part \u003cstrong\u003e104.707\u003c\/strong\u003e. The ring holder body alone is available separately as GRS part \u003cstrong\u003e104.754\u003c\/strong\u003e.\u003c\/p\u003e","brand":"Glendo GRS","offers":[{"title":"Default Title","offer_id":43583709216982,"sku":"104.735","price":128.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/grs-004-735-inside-diameter-ring-holder-with-20-mandrels-otto-frei-1.jpg?v=1719956534","url":"https:\/\/www.ottofrei.com\/products\/grs-004-735-inside-diameter-ring-holder-20-mandrels","provider":"Otto Frei","version":"1.0","type":"link"}