[1]APPLY TO - M2 High Speed Steel Hole Saw is engineered for drilling thin stainless steel (3mm or less) and general metal sheets. Usable for wood/plastic, but not recommended; if needed, add a little water for cooling during cutting. Works effectively with hand electric drills, bench vertical drills and portable magnetic base drills, and is widely used in auto repair, metal processing and woodworking renovation projects
[2]SPECIFICATION - Hole Saw Diameter: 40mm (1-9/16"), Cutting Depth: 3mm (0.12"), Shank Diameter: 7.5mm (0.3"), Total Length: 70mm (2.76") with Triangular Shank, with 1pc Center Drill Bit Diameter: 6mm (0.24"), with 1pc Hex Key
[3]DESIGN - Surface Hardening Treatment (Nitriding + Polishing) - Provides the surface of the hole saw with wear resistance while maintaining sufficient toughness on the inside. The surface is smooth and glossy, rust-resistant and aesthetically pleasing
[4]ADVANTAGES - Our hole saw are heat-treated + surface treatment (Quenched + Tempered) to increase hardness and red-hardness as well as wear resistance,extending service life and increasing machining efficiency
[5]EXPAIN - Need to rotate the center drill to make it fixed, use the hex key to align the locking pin with the hole of the groove of the center drill, tighten and fix it on the tool could be used, at the same time, you need to pay attention to the installation of the spring. Pay attention to keep the vertical state