DescriptionBosch 7 pc. Diamond Hole Saw SetFast and easy starts， even in the hardest materials like porcelain and granite. Quick Changeuniversal hole saw system allows change to any size or type of hole saw in seconds. For use only with machines designed for wet sawing and on a GFCI-protected circuit.FeaturesVacuum-brazed diamond grit cuts faster and lasts longerSegmented teeth reduce debris and heatAutoStart pilot bit is spring-loaded， retractable shaft allows walk-free cutting without a pilot holePilot bit offers unique grind that starts holes accurately every timePlastic caseSpecificationsBrand NameBoschAssembled Weight (lbs)2.980000Bit Diameter(1) mandrel， (1) AutoStart™ pilot bit， hole saws: (1) 5/8"， (1) 1"， (1) 1-3/8"， (1) 2"， (1) 2-1/4"Bit MaterialDiamond CoatedBit TypeHole SawCalifornia Proposition 65 Warning RequiredNoCountry of OriginTaiwanglobalTradeItemNumber (GTIN)00000346392371Hole Saw TypeTile and Natural StoneInternal Supplier Part #2610004945Internet Product Code (IPC)64E64872B08Manufacturer WarrantyLimited Manufacturer warrantyPackage Contents(1) mandrel， (1) AutoStart™ pilot bit， hole saws: (1) 5/8"， (1) 1"， (1) 1-3/8"， (1) 2"， (1) 2-1/4"，CasePackage Depth12Package Height7.9Package Weight3.29Package Weight (lbs)3.29Recommended Safety EquipmentEye， ear and dust protectionTeeth per InchDiamond GritUPC000346392371