Item Type: Carbide Hole Cutter Material: Carbide Purpose: To make holes in steel plate, iron plate, stainless steel, aluminum plate, calcium silicate plate, plastic plate, resin plate, FRP plate Plate Cutting Thickness: Approx. 3mm or 0.1in Total Length: Approx. 88mm or 3.5in Inner Wall Thickness: Approx. 20mm or 0.8in Shank Diameter: Approx. 9.8mm or 0.4in Hole Diameter Specification: Approx. 16mm or 0.63in 16.5mm or 0.65in 17mm or 0.67in 17.5mm or 0.69in 18mm or 0.71in 18.5mm or 0.73in 19mm or 0.75in 19.5mm or 0.77in 1,The main body is made of cemented carbide, which effectively extends the service life. 2,This 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. 3,The cutting edge is incisive, the opening is neat and glossy without broken edges, and the cutting resistance is small. 4,With front and rear inclination angle tooth shape design, low resistance and strong perforation ability. 5,The carbide hole saw can be compatible with a variety of materials and work more efficiently.Not suitable for electric drills and impact drills, as well as materials such as tiles, concrete, wall, and stones. 2 x Hole Saw 2 x Spring 2 x Hex Wrench Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.