High quality forged alloy blade, advanced sintering technology, perfect mosaic alloy blade, very sharp, long service life. Unique event positioning plate allows for more convenient opening. The positioning plate material is a powder alloy die-cast purpose: for combating hinges, perforated woodworking and plastic products. Radiant curve design of the body head contributes to chip and better piercing results. Suitable for drill, pistol drill, bench drill, vertical drill, hand drill, motor-driven drill and mobile tape magnetism drill, etc. High quality 35mm carbide hole saw for Forstner with special hinge, Manufacturer: TF