Specification Brand : Slaige BulletPoint1 : Specifications: Shank diameter: 3mm(1/8"), cutting edge diameter: 4mm(0.16"), 5mm(1/5"). Fits most rotary die grinders BulletPoint2 : Long Working Life: Made of heat-treated tungsten carbide that hardness can be up to above HRA85, sharp and sturdy, long service life BulletPoint3 : Single Cut Design: Single groove rotary files are more suitable for the object density is relatively high, such as alloy steel, stainless steel, hardened steel BulletPoint4 : Versatile Use: Widely used for metalwork, tool making, model engineering, wood carving, jewelry making,welding, chamfering, casting, deburring, grinding, sculpting BulletPoint5 : Tips: Requirement of the carbide burrs rotating speed is: 4000-50000 rpm. Always ensure your burrs shank is well inserted into your collet and clamped down tightly Color : Black ExternallyAssignedProductIdentifier1 : 0699918816843 ExternallyAssignedProductIdentifier2 : 699918816843 ExternallyAssignedProductIdentifier3 : 00662633893208 ItemName : 50pcs Carborundum Bur Diamond Burs Set, High Speed Drill Bits Red ItemPackageDimensions_Height : 12.3952 centimeters ItemPackageDimensions_Length : 3.302 centimeters ItemPackageDimensions_Width : 10.0076 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : cutting-burs Manufacturer : BesyTools Material : Acetal ModelNumber : NL89320AS NumberOfItems : 20 PartNumber : a24022600ux0006 ProductDescription : 50pcs Carborundum Bur Diamond Burs Set, High Speed Drill Bits Red ProductSiteLaunchDate : 2019-03-27T07:00:00.000Z Size : 3mm x 5mm SupplierDeclaredDgHzRegulation : not_applicable UnitCount : 50