{"product_id":"tuna-microblock-ball-vise-18-piece-ring-holder-set","title":"TUNA Microblock Ball Vise With Inside Ring Holder Attachment Set","description":"\u003cp\u003eThe \u003cstrong\u003eTUNA Microblock Ball Vise with Inside Ring Holder Attachment Set\u003c\/strong\u003e is a precision holding tool designed for professional jewelers, stonesetters, and engravers. Featuring a matte stainless steel construction and smooth ball-bearing rotation, this microblock delivers stable 360° workpiece access whether you're working under a microscope, magnifier, or at the open bench. The included 18-piece expandable collet set and accessory hardware make this a ready-to-use system for a wide range of ring sizes and holding tasks.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMatte stainless steel finish resists glare under bright bench and microscope lighting\u003c\/li\u003e\n\u003cli\u003ePrecision ball bearings provide smooth, even 360° rotation\u003c\/li\u003e\n\u003cli\u003eSelf-centering jaws maintain secure, even pressure on the workpiece\u003c\/li\u003e\n\u003cli\u003e18-piece expandable collet set accommodates rings from size 4–16 (15mm–25mm ID)\u003c\/li\u003e\n\u003cli\u003e18 mounting holes (3.7mm diameter), including 6 threaded, for flexible attachment configurations\u003c\/li\u003e\n\u003cli\u003ePeg set extends max jaw opening to 2.88\" (72.5mm) for larger workpieces\u003c\/li\u003e\n\u003cli\u003eSuitable for use with microscopes, GRS-style systems, Optivisors, and similar magnification setups\u003c\/li\u003e\n\u003cli\u003eCompatible with flex shaft and micromotor handpieces for stonesetting and engraving applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eOverall Diameter\u003c\/th\u003e\n\u003ctd\u003e3.5\" (90mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHeight\u003c\/th\u003e\n\u003ctd\u003e3.5\"–5\" (90mm–130mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHole Count\u003c\/th\u003e\n\u003ctd\u003e18 holes, 3.7mm diameter; 6 threaded\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCollet Range\u003c\/th\u003e\n\u003ctd\u003e5\/8\"–1\" (15mm–25mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMax Jaw Opening (Using Pegs)\u003c\/th\u003e\n\u003ctd\u003e2.88\" (72.5mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd\u003e4 lbs (1.8kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 TUNA Microblock ball vise (matte stainless steel)\u003c\/li\u003e\n\u003cli\u003e18-piece expandable ring collet set\u003c\/li\u003e\n\u003cli\u003e4-piece peg set\u003c\/li\u003e\n\u003cli\u003e6 hex nuts\u003c\/li\u003e\n\u003cli\u003e2-piece hex key set\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eNotes\u003c\/h3\u003e\n\u003cp\u003eThis product is tagged for California Proposition 65 (Nickel). While optimized for microscope and pneumatic engraving systems, the TUNA Microblock performs equally well in manual setups using bench magnifiers or Optivisors.\u003c\/p\u003e","brand":"Ikohe","offers":[{"title":"Default Title","offer_id":44421539102934,"sku":"136.925","price":355.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/tuna-microblock-ball-vise-with-inside-ring-holder-attachment-set-otto-frei-1.jpg?v=1708017398","url":"https:\/\/www.ottofrei.com\/products\/tuna-microblock-ball-vise-18-piece-ring-holder-set","provider":"Otto Frei","version":"1.0","type":"link"}