Sandflex® bimetal hole saws do an excellent job in most materials such as wood, plastic, non-ferrous and ferrous steels including stainless steel. Fits electric drills, both stationary and portable. Side slots allow quick and easy removal of cores. Maximum depth of cut 38 mm. 4/6 teeth per inch. All VIP hole saws in cardboard packaging, with instructions enclosed. Max. Hole size = Nominal hole saw size + 1.5 mm/ - 0.0. Extra large dimensions. 168 mm and 210 mm with 6 TPI and normal cutting depth. 177 mm with 4/6 TPI, cutting depth max. 50 mm. All large hole saws cut with a 0° cutting angle for a less aggressive cut.