Specification Brand : ILOVETOOL BulletPoint1 : Product Name:Diamond Grinding Bits Q Needle, Jade Carving Bits for Round Bead,Grinding Stone Eyes. BulletPoint2 : Quantity:Total 20Pcs, Head Diameter:10mm (3/8"), Shank diameter:3mm(close to 1/8") BulletPoint3 : Head Shape:SPHERICAL CONCAVE Head, Total length:42mm, Grit:150 Medium, Speed: 2800-30000 RPM BulletPoint4 : Product use: Apply to stone carving, jade carving, Gem peeled, bone carving, egg decorating, glass carving etc. Used for sculpturing, dressing, precision grinding and internal grinding carbide in ceramic, glass, precious stone, alloy and many the abrasive materials. BulletPoint5 : Use with water as a lubricant; Note: carving must use cold water to cool the workpiece and the grinding head polishing, moment also can't do without water Color : Silver ExternallyAssignedProductIdentifier1 : 689749741667 ExternallyAssignedProductIdentifier2 : 0689749741667 ItemName : ILOVETOOL Diamond Grinding Bits 10mm Q Needle Concave Needle Grinding Bits Jade Carving Tools Pack of 20Pcs ItemPackageDimensions_Height : 9.398 centimeters ItemPackageDimensions_Length : 1.7018 centimeters ItemPackageDimensions_Width : 6.1976 centimeters ItemPackageQuantity : 20 ItemTypeKeyword : abrasive-grinding-mounted-points Manufacturer : ILOVETOOL Material : Diamond+Metal ModelNumber : YDZ-QZ-20PCS PartNumber : YDZ-QZ-20PCS ProductDescription : 20Pcs 10mm SPHERICAL CONCAVE Head Diamond Mounted Point Grinding Tip for Lapidary Carving Tools Code 100Q Product Specification: Product Name:Diamond Grinding Head, Diamond Grinding Head Nail Bit Jade Carving Burrs Stone Head Shape:SPHERICAL CONCAVE Head Quantity:Total 20Pcs Head Diameter:10mm Shank Diameter:3mm(1/8"); Suitable for dremel, electric grinder, carving machine, machinery supporting assembly with a 1/8" collet.then the grinding bit can be installed and used directly for Dremel. But it is NOT suitable for machines with 3/32 inch chuck, such as Electric Nail Drill. Total length:42mm. Grit:150 Medium. Speed: 2800-30000 RPM, electric grinder speed as high as possible. The Mounted Point can be installed on the electric grinder, hanging mill and hand electric drill (not included here). Never use drills while machine is in hammer action. Product use: Apply to stone carving, jade carving, Gem peeled, bone carving, egg decorating, glass carving etc. Used for sculpturing, dressing, precision grinding and internal grinding carbide in ceramic, glass, precious stone, alloy and many the abrasive materials Use with water as a lubricant Note: carving must use cold water to cool the workpiece and the grinding head polishing, moment also can't do without water We Can List Any Size (Hole Diameter from 0.8mm - 40mm) & Amount Of This Product ProductSiteLaunchDate : 2017-11-17T16:00:00.000Z Size : Head Diameter:10mm UnspscCode : 31191600