Specification Brand : uxcell BulletPoint1 : Product Name : Glass Hole Saw BulletPoint2 : Cutting Hole Diameter : 12 mm / 15/32";Shank Hole Diameter : 4 mm / 0.16" BulletPoint3 : Shank Size (Approx.) : 20 x 7 mm / 0.8" x 0.27" (L*D);Total Length : 51 mm / 2" BulletPoint4 : Color : Silver Tone; Main Material : Metal; Weight : 47g BulletPoint5 : Package Content : 4 x Glass Hole Saw Color : Silver CompatibleMaterial : Metal ExternallyAssignedProductIdentifier1 : 700955224888 ExternallyAssignedProductIdentifier2 : 0700955224888 ExternallyAssignedProductIdentifier3 : 00700955224888 GpsrSafetyAttestation : 1 ItemName : uxcell 4 Pcs 12mm Dia Diamond Coated Drill Bit Marble Glass Hole Saw Cutter ItemPackageDimensions_Height : 1.2 centimeters ItemPackageDimensions_Length : 10.2 centimeters ItemPackageDimensions_Width : 14.4 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : hole-saws Manufacturer : Sourcingmap Material : Metal ModelNumber : a13032900ux0096 PartNumber : a13032900ux0096 ProductDescription : 4 pcs silver tone metal glass hole saw, diamond coated cutting hole, great for making clean and accurate hole on glass and tile. Suitable for drilling marble, tile, glass, stone, great replacement for the old or damaged ones. Works better with an electric drill (here is not included).