Item Type: Carbide Hole Cutter_x000D_Material: Carbide_x000D_Purpose: To make holes in steel plate, iron plate, stainless steel, aluminum plate, calcium silicate plate, plastic plate, resin plate, FRP plate_x000D_Plate Cutting Thickness: Approx. 3mm / 0.1in_x000D_Total Length: Approx. 88mm / 3.5in_x000D_Inner Wall Thickness: Approx. 20mm / 0.8in_x000D_Shank Diameter: Approx. 9.8mm / 0.4in_x000D_Hole Diameter Specification: Approx. 16mm / 0.63in_x000D_16.5mm / 0.65in_x000D_17mm / 0.67in_x000D_17.5mm / 0.69in_x000D_18mm / 0.71in_x000D_18.5mm / 0.73in_x000D_19mm / 0.75in_x000D_19.5mm / 0.77in 1The main body is made of cemented carbide, which effectively extends the service life. 2This hole saw cutter can make holes in steel plates, iron plates, stainless steel plates, aluminum plates, calcium silicate plates, plastic plates, resin plates, and FRP plates. 3The cutting edge is incisive, the opening is neat and glossy without broken edges, and the cutting resistance is small. 4With front and rear inclination angle tooth shape design, low resistance and strong perforation ability. 5The carbide hole saw can be compatible with a variety of materials and work more efficiently. 2 x Hole Saw 2 x Spring 2 x Hex Wrench