{"product_id":"jura-grs-500-510-qc-complete-set-microblock","title":"Jura by GRS 500-510 QC Complete Set with GRS MicroBlock","description":"\u003cp\u003eThe Jura by GRS 500–510 QC Complete Set with GRS MicroBlock is one of the most comprehensive quick-change workholding systems ever offered for precision micro-stonesetting and jewelry holding. Developed under the Jura by GRS line — a collaboration that brought Swiss-influenced workholding refinement to the GRS platform — this set pairs the GRS MicroBlock base with the full range of Jura QC attachments, giving bench jewelers a single, organized solution for gripping rings, cylinders, balls, flat stock, and irregular forms. Production of Jura by GRS tools ended in 2023, and remaining inventory is limited. For professionals seeking a complete setup, this is one of the last opportunities to acquire the full system new.\u003c\/p\u003e\u003cp\u003eAt the center of the set is the GRS MicroBlock, pre-configured to accept Jura's quick-change jaw interface. The QC system allows rapid swapping between holding configurations without disrupting your workflow — critical when moving between ring shanks, stone tables, and freeform work in a single session. Every component is included and ready to use from first setup through final polish.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eComprehensive quick-change system for inside and outside holding of rings and small items\u003c\/li\u003e\n\u003cli\u003eIncludes GRS MicroBlock prepared to accept QC jaws and fixtures\u003c\/li\u003e\n\u003cli\u003eTen-piece expandable collet set for secure internal gripping\u003c\/li\u003e\n\u003cli\u003eDedicated jigs and tops for round, straight, tapered, ball, and cylindrical work\u003c\/li\u003e\n\u003cli\u003eShellac\/Thermo-Loc fixtures for fast, repeatable fixturing\u003c\/li\u003e\n\u003cli\u003eM6 interface plate for mounting and stability\u003c\/li\u003e\n\u003cli\u003eAll components organized as a single, ready-to-use set\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eSystem Type\u003c\/th\u003e\n\u003ctd\u003eQuick-Change (QC) workholding set\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWorkholding Base\u003c\/th\u003e\n\u003ctd\u003eGRS MicroBlock (QC-ready)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eQC Attachments Included\u003c\/th\u003e\n\u003ctd\u003e13 different QC attachments\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSet Components\u003c\/th\u003e\n\u003ctd\u003eQC Basic Set plus full attachment collection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eJura by GRS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eWhat's Included\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eGRS MicroBlock ready for Jura by GRS tools*\u003c\/li\u003e\n\u003cli\u003eJura by GRS 500.509 QC Basic Set, which includes:\u003cul\u003e\n\u003cli\u003e500-018 Microblock Master Jaw Set\u003c\/li\u003e\n\u003cli\u003e500-010 Inside Ring Holder Jig Set Clamp\u003c\/li\u003e\n\u003cli\u003e500-011 Inside Ring Holder Screw Set\u003c\/li\u003e\n\u003cli\u003e500-504 10-Piece Expandable Collet Set\u003c\/li\u003e\n\u003cli\u003e500-007 Flat Clamp with Groove\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e502-501 M6 Plate with M6 Thread \u0026amp; Screw\u003c\/li\u003e\n\u003cli\u003e500-506 Ball Holders (pair)\u003c\/li\u003e\n\u003cli\u003e500-507 Tapered Holders (pair)\u003c\/li\u003e\n\u003cli\u003e502-015 Shellac\/Thermo-Loc Knurled Cylinder\u003c\/li\u003e\n\u003cli\u003e502-502 Shellac\/Thermo-Loc Triangle Cylinder\u003c\/li\u003e\n\u003cli\u003e500-001 Cylinder Top 6 mm with Groove\u003c\/li\u003e\n\u003cli\u003e500-002 Cylinder Top 10 mm\u003c\/li\u003e\n\u003cli\u003e500-003 Round Top 20 mm\u003c\/li\u003e\n\u003cli\u003e500-004 Straight Top 20 mm\u003c\/li\u003e\n\u003cli\u003e500-005 Straight Top 40 mm\u003c\/li\u003e\n\u003cli\u003e500-014 Shellac Plate\u003c\/li\u003e\n\u003cli\u003e500-013 Thermo-Loc Jaw Clamps\u003c\/li\u003e\n\u003cli\u003e500-006 Jaw Set with 3\/32\" Pin Holes\u003c\/li\u003e\n\u003cli\u003e500-009 Outside Ring Holding Jaw Set\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eNotes\u003c\/h3\u003e\u003cp\u003eFixtures are designed for use with thermoplastic fixturing materials such as Thermo-Loc, Jett-Set, or traditional shellac. \u003cem\u003eProduction of Jura by GRS tools ended in 2023; remaining inventory is limited.\u003c\/em\u003e\u003c\/p\u003e\u003cp\u003e\u003cem\u003e*MicroBlock is QC-ready for Jura by GRS jaws.\u003c\/em\u003e\u003c\/p\u003e","brand":"Jura by GRS","offers":[{"title":"Default Title","offer_id":45557456109782,"sku":"129.500510","price":1398.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/500.510NEW2_thumb_b3a78c89-e2b2-4fd4-aa0a-81521bf22d2c.jpg?v=1733858481","url":"https:\/\/www.ottofrei.com\/products\/jura-grs-500-510-qc-complete-set-microblock","provider":"Otto Frei","version":"1.0","type":"link"}