{"product_id":"90x40mm-diamond-cylinder-round-end-bur-36-grit-6mm-shank-5pcs","title":"90x40mm Round End Cylinder Diamond Bur, 5pcs – 36 Grit 6mm Shank Heavy-Duty Carving Tool for Gemstone, Stone \u0026 Glass","description":"\u003cp\u003eHeavy-duty industrial \u003cstrong\u003e90x40mm Round End Cylinder Diamond Burs (6mm Shank, 5-Piece Set)\u003c\/strong\u003e engineered for aggressive stock removal, deep channel carving, cavity hogging, and heavy-duty contouring in ultra-hard lapidary and masonry materials. Coated with extra-coarse 36-grit industrial diamond matrix securely bonded onto a rigid 6mm heat-treated steel shank.\u003c\/p\u003e\n\n\u003ch3\u003eKey Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 90x40 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHead Shape:\u003c\/strong\u003e Cylinder with Round End (Ball Nose Dome Cylinder)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter:\u003c\/strong\u003e 6 mm (Standard heavy-duty rotary tool \u0026amp; die grinder fit)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGrit:\u003c\/strong\u003e 36# Extra Coarse (Rapid stock hogging and rough shaping)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAbrasive \/ Bond:\u003c\/strong\u003e Premium Industrial Diamond \/ Heavy-Duty Electroplated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 5 pieces per set\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eRecommended Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eRough hollow carving, deep channel excavation, and large-format gemstone contouring\u003c\/li\u003e\n  \u003cli\u003eStone sculpting, granite\/marble profiling, and ceramic tile edging\u003c\/li\u003e\n  \u003cli\u003eGlass sculpturing, heavy beveling, and cast deburring\u003c\/li\u003e\n  \u003cli\u003eWeld smoothing, casting cleanup, and hard metal shaping\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eUsage Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eAlways operate with continuous water coolant or liquid lubrication to prevent matrix overheating and ensure maximum service life.\u003c\/li\u003e\n  \u003cli\u003eRecommended operational speeds: 8,000 – 18,000 RPM. Maintain consistent feed pressure without forcing.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"hanslapidarytool","offers":[{"title":"Default Title","offer_id":51428582883512,"sku":"BUR-RCYL-90X40MM-36G-6S-5PK","price":25.64,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0570\/3217\/9896\/files\/daceb371c3d906e7ee6120be0a3e3f31.jpg?v=1749442428","url":"https:\/\/lapidarygrinder.com\/pl\/products\/90x40mm-diamond-cylinder-round-end-bur-36-grit-6mm-shank-5pcs","provider":"hanslapidarytool","version":"1.0","type":"link"}