Specification Brand : JewelrySupply BulletPoint : Made in the USA BulletPoint1 : Our finest 45* Hart Burs in a 12 piece set. These burs feature 3/32" wide shafts and are made of tungsten vanadium steel. Packaged in a reusable plastic pouch, these high quality Swiss made burs are made to last and work great with any high speed rotary hand drill, such as our item PO270. Overall shaft lengths are 1-3/4". Remember, always use a cooling lubricant such as BR180 with burs to improve cut and extend bur life. For use on metal only. BulletPoint2 : Includes Sizes BulletPoint3 : .90mm BulletPoint4 : 1.00mm BulletPoint5 : 1.20mm Color : Metal CutType : Double Cut ExternallyAssignedProductIdentifier1 : 0028841192494 ExternallyAssignedProductIdentifier2 : 028841192494 ItemName : 45* Hart Burs 12pc Set for Jewelry Making ItemPackageDimensions_Height : 1.27 centimeters ItemPackageDimensions_Length : 7.366 centimeters ItemPackageDimensions_Width : 1.778 centimeters ItemPackageQuantity : 1 ItemShape : Ball,round ItemTypeKeyword : cutting-burrs Manufacturer : JewelrySupply Material : Tungsten Vanadium Steel ModelName : SM-4 ModelNumber : BR570 NumberOfBoxes : 1 NumberOfFlutes : 1 NumberOfItems : 1 NumberOfPieces : 8 PackageLevel : unit PartNumber : BR570 ProductDescription : Our finest 45* Hart Burs in a 12 piece set. These burs feature 3/32" wide shafts and are made of tungsten vanadium steel. Packaged in a reusable plastic pouch, these high quality Swiss made burs are made to last and work great with any high speed rotary hand drill, such as our item PO270. Overall shaft lengths are 1-3/4". Remember, always use a cooling lubricant such as BR180 with burs to improve cut and extend bur life. For use on metal only. Includes Sizes .90mm 1.00mm 1.20mm 1.40mm 1.50mm 1.80mm 2.10mm 2.30mm 2.50mm 2.70mm 2.90mm 3.10mm ProductSiteLaunchDate : 2013-10-24T17:38:56.598Z Size : One Size Style : Cone bur with pointed end – Shape M SupplierDeclaredDgHzRegulation : not_applicable SurfaceRecommendation1 : Wood SurfaceRecommendation2 : Concrete TargetAudienceKeyword1 : unisex-adult TargetAudienceKeyword2 : adults TargetAudienceKeyword3 : women UnitCount : 8 UnspscCode : 60120000