The Sandflex® bi-metal hole saws are specially designed for cutting holes in metal, but can also be used for most materials such as wood, plastic, non-ferrous metal and ferrous steel, including stainless steel Bi-metal construction with 8% cobalt for increased wear resistance Fits all drills, both portable and stationary Special side openings facilitate removal of the cut-out core Cutting depth max. 38 mm (1 1/2") 4/6 teeth per inch Maximum hole size = nominal hole saw diameter + 1.5 mm/-0.0 All VIP hole saws are packed in a cardboard box with instructions for use, All C hole saws can be hung (Euro slot) and have an instruction flyer that can also serve as a tooth protector For professional use Bi-metal construction with 8% cobalt for higher wear resistance Hole saws with standard mounting, so they fit in a wide range of different holders High quality for precision, durability and versatility Whatever material you need to cut, we have the hole saws and holders to get the job done! Developed to improve productivity and craftsmanship, from the design of the teeth to the technologies used to produce the hole saws