Specification Brand : KangTeer BulletPoint : Replaceable motor brushes extend tool life BulletPoint1 : These polishing tips provided a very smooth mirror like finish BulletPoint2 : The rubber grinding head/Elastic sponge rubber grinding head BulletPoint3 : Suitable for the polishing of metal and non-metallic surface jade amber emerald agate nuclear carving jade carving BulletPoint4 : They work well for cleaning rust off steel, removing light pitting, softening hard edges on parts, and cleaning up stone ground surfaces. Much less aggressive than sandpaper drums, but more aggressive than coarse polishing compound BulletPoint5 : If you're a DYI'er, hobbyist, technician, etc., you'll appreciate having these to get the best from your rotary tool. They fit my Dremel and my off-brand rotary tools. Color : Silver CompatibleDevices : Die Grinder CompatibleMaterial : Wood,ceramic,alloy,glass,metal,steel,stone ConstructionType : Grinding CustomerPackageType : Standard Packaging ExternallyAssignedProductIdentifier : 8994244751557 ExternallyAssignedProductIdentifier1 : 718040981363 ExternallyAssignedProductIdentifier2 : 0718040981363 ExternallyAssignedProductIdentifier3 : 00731056701022 FinishType : Finish IncludedComponents : bare-tool ItemName : KangTeer Rubber Polishing Burrs Bits 30 Pcs 1/8" Shank 3/8" Head Cylindrical Die Grinder Rotary Tools for Metal Derusting Glass Buffing ItemPackageDimensions_Height : 11.43 centimeters ItemPackageDimensions_Length : 3.81 centimeters ItemPackageDimensions_Width : 8.89 centimeters ItemPackageQuantity : 30 ItemTypeKeyword : power-rotary-tools Manufacturer : KangTeer Material : vanadium alloy Material1 : Metal Material2 : Diamond MaximumRotationalSpeed : 5000 rpm MinimumSpeed : 30000 rpm ModelNumber : KT-11234 NumberOfItems : 30 PartNumber : KT-11234 PowerSourceType : Corded Electric ProductDescription : Material: Green Rubber The shank diameter:1/8" (3mm) Cylinder Grinding Head :10mm Use in ring and jewelry making Package Included: 30 pieces 3*10mm Rubber polishing burrs