Specification Brand : Kempston BulletPoint1 : Bi-metal designed and constructed by electron beam welding to deliver long life against heavy duty and tough job. Ideal for Drilling Wood, Plastic, Aluminum, Metal and Stainless Steel BulletPoint2 : 4/6 variable pitch teeth for reduced noise and improved finishing performance. Variable Depth Gullets provides more efficient chip clearance. Optimized cutting forms achieve up to 2x faster cuttings BulletPoint3 : Tool-free Lock mandrel system for a quick and easy change with no down time and prevent hole saws from locking to the mandrel. They alos feature set screw for quick and easy centering bit changes BulletPoint4 : 88021 9x Holesaw Set includes: 6x Hole Saws: 3/4"(19mm),7/8"(22mm), 1-1/8"929mm), 1-1/2"(38mm), 1-3/4"(44mm), 2-1/4"(57mm), 2x mandrels: 3/8"(9.5mm) universal , 7/16"(11.1mm) universal BulletPoint5 : Universal 7/16" mandrel fits KEMPSTON hole saws from 1-1/4" to 6" in diameter, while universal 3/8" mandrel fits from 9/16" to 1-3/16" Color : Silver CompatibleMaterial1 : Stone CompatibleMaterial2 : Metal CustomerPackageType : Standard Packaging ExternallyAssignedProductIdentifier1 : 687461880213 ExternallyAssignedProductIdentifier2 : 0687461880213 ExternallyAssignedProductIdentifier3 : 00687461880213 IncludedComponents : 88021 Bi-Metal Hole Saw Set 9X ItemName : Kempston Bi-Metal Hole Saw Set ItemPackageDimensions_Height : 24.9 centimeters ItemPackageDimensions_Length : 5.4 centimeters ItemPackageDimensions_Width : 19.7 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : hole-saws Manufacturer : KEMPSTON Material : Metal ModelNumber : 88021 NumberOfItems : 1 PartNumber : 88021 ProductDescription :
Made of metal material and with carbide tipped. Used for drilling walls, stones, bricks, etc. Quite useful. Greatly replace the broken adapter with your drill chuck .