Feature:1. The main body of this hole saw is made of cemented carbide, which effectively extends the service life.2. Can make holes in steel plates, iron plates, stainless steel plates, aluminum plates, calcium silicate plates, plastic plates, resin plates, and FRP plates.3. This cutting edge is incisive, the opening is neat and glossy without broken edges, and the cutting resistance is small.4. Thefront and rear inclination angle tooth shape design, low resistance and strong perforation ability.5. This hole saw can be compatible with a variety of materials and work more efficiently.Spec:Item Type: Carbide Hole SawMaterial: CarbidePurpose: To make holes in steel plate, iron plate, stainless steel, aluminum plate, calcium silicate plate, plastic plate, resin plate, FRP platePlate Cutting Thickness: Approx. 3mm / 0.1inTotal Length: Approx. 88mm / 3.5inInner Wall Thickness: Approx. 20mm / 0.8inShank Diameter: Approx. 9.8mm / 0.4inHole Diameter Specification: Approx. 50mm / 2in51mm / 2.01in53mm / 2.1in55mm / 2.2in60mm / 2.4in65mm / 2.6in70mm / 2.8in75mm / 3in80mm / 3.1in85mm / 3.3in90mm / 3.5in95mm / 3.7in100mm / 3.9inPackage List:1 x Hole Saw1 x Spring1 x Hex WrenchNote:Not suitable for electric drills and impact drills, as well as materials such as tiles, concrete, wall, and stones.