Specification Amperage : 6 amps Brand : ViaGasaFamido BulletPoint1 : HIGH QUALITY MATERIAL: This hole saw is made of high quality material. It is not only very hard but also very wear resistant.General purpose triangle drill shank, effectively prevent slipping during drilling, and withstand greater BulletPoint2 : MEET YOUR DEMANDS: Great hole saw is suitable for drilling on tile,concrete, brick, glass, marble, ceramic and etc.The hole opener can be used on bench drills, hand drills and machine tools with drilling functions, but it cannot be used for impact drills BulletPoint3 : CHIP REMOVAL HOLE DESIGN: All specifications have special holes for chip removal, and all debris generated when you drill is very easy to discharge.Very suitable for making clean and accurate holes. BulletPoint4 : DRY GRINDING IS STRICTLY PROHIBITED: During use, it is necessary to continuously add water to cool, and dry grinding is strictly prohibited. It can be positioned at an oblique angle of 45 degrees first, and then drilled vertically. Note that the speed should not be too fast, and the speed should be operated slowly at 800-1000 rpm BulletPoint5 : AFTER SALE: We hope you have a good shopping experience.Please feel to us at first if there is any problem,and we are always here to support you. Color : Black CompatibleMaterial : Marble DrillType : hammer_drill ExternallyAssignedProductIdentifier1 : 0738587636496 ExternallyAssignedProductIdentifier2 : 738587636496 FinishType : Diamond IncludedComponents : See Description Section IsElectric : 1 ItemName : Drill Bits, Hollow Core Drill Bits Extractor Remover Tools Hole Saws for Drilling on Tile,Concrete, Brick, Glass, Marble and Ceramic(100mm) ItemPackageDimensions_Height : 11.3 centimeters ItemPackageDimensions_Length : 8 centimeters ItemPackageDimensions_Width : 10.5 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : core-drill-bits Manufacturer : ViaGasaFamido Material : Ceramic,Diamond,Glass,Marble Material1 : Metal Material2 : Plastic MaximumRotationalSpeed : 8000 rpm ModelName : END 712 ModelNumber : END 712 NumberOfItems : 1 PartNumber : ViaGasaFamido0e6gbyqtf8-12 PowerSourceType : AC ProductDescription : Specification: Item Type: Hole Opener Optional 90mm, 100mm Opener Model Total Product length Handle Length Handle Diameter Working Depth 90mm / 3.5in 80mm / 3.1in 5mm / 0.2in 9.4mm / 0.4in 54mm / 2.1in 100mm / 3.9in 80mm / 3.1in 5mm / 0.2in 9.4mm / 0.4in 54mm / 2.1in