Sandflex® bi-metal holesaws work excellently in most materials such as wood, plastics, non ferrous and ferrous steel including stainless steel.Bi-metal construction with 8% cobalt for increased wear resistance.Fit all power drills, both stationary and portable.Knockout holes allow easy removal of cores.Cutting depth max 38 mm (1 1/2").4/6 teeth per inch.Max. holesize = nominal holesaw size +1.5 mm./- 0.0.All -C holesaws are packed in a nice self-service packing with an instruction leaflet that also works as a tooth protector.Designed for professional use.Bi-metal construction with 8% cobalt for increased wear resistance.Holesaws with standard attachment to fit a wide range of arbors.High quality in terms of precision, durability and versatility.No matter what you are cutting through, we have the holesaws and arbors to tackle the job, time after time.Engineered to improve productivity and craftsmanship from the design of the cutting edges to the technologies used to produce the holesaws