Quickly and accurately cut holes into stainless steel plates, metals, cast iron, alloys, brass and other tough alloys. The and hardened tip is optimized to penetrate the object easily and smoothly. The plane anti-skid handle design can be used for hand-held drills, bench drills, magnetic drills and other rotary machines. Please keep the drill bit running evenly at a low speed to prolong the service life of the hole cutter. Material: made of alloy, with high hardness, strong rust resistance, gear, labor saving and long service life. Excellent design: alloy hole saw adopts multi-tooth gear design, built-in central alloy bit, which is easy to locate accurately and ensures that the hole saw is firmly fixed during work. In addition, there is a spring on the center bit to avoid jamming and smoother. Colour:Silver Material:alloy Size:16mm,18mm,20mm,22mm,25mm,35mm. Package Contents: 1 * Hole saw set Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.