Feature:1. The main body is made of cemented carbide, which effectively extends the service life2. Compatible with multiple materials, which make work more efficiently3. Can be used for steel plate, iron plate, stainless steel, aluminum plate, calcium silicate plate, plastic plate, resin plate, FRP plate opening4. The cutting edge is of sharpness, the opening is neat and smooth without broken edges, and the cutting resistance is small5. Front and back angle tooth design bring low resistance and strong perforation abilitySpecification:Item Type: TCT Hole SawMaterial: CarbideUses: Steel plate, iron plate, stainless steel, aluminum plate, calcium silicate plate, plastic plate, resin plate, FRP plate openingPlate Cutting Thickness: Approx. 3mm / 0.1inTotal Length: Approx. 88mm / 3.5inInner Wall Thickness: Approx. 20mm / 0.8inShank Diameter: Approx. 9.8mm / 0.4inHole Diameter: Approx. 30mm / 1.2in32mm / 1.3in35mm / 1.4in36mm / 1.4in38mm / 1.5in Package List:1 x TCT Hole Saw1 x Spring1 x Hex WrenchNote:Not suitable for hand drills and impact drills, as well as materials such as tiles, concrete, wall, and stones.