Hole cutter also known as hole saw or hole saw, refers to the modern industry or engineering processing of a circular hole saw cutting special circular saw .Simple and flexible operation, easy to carry, safe, widely used.  Hole opener (cutter) installed on the ordinary electric drill, can be easily in copper, iron, stainless steel, plexiglass and other plates of the plane, spherical and other arbitrary surface of the round hole, square hole, triangle hole, straight line, curve arbitrary cutting.We are factory that specialising in producing drill bits,hole saw and saw blade.We are the professional manufacturer of hardware tool accessories, specialized in drill bits, hole saw, cutting discs and various tool sets. Besides, we also supply kinds of hand tools, include measuring tapes, caulking guns, cable ties,etc.Contact me if you have any questions for twist drill bit, step drill bit and wood working drill etc.Common drill bits include twist drill, woodworking drill, hole drill and flat drill.  Each has its own advantages and limitations.  We can also provide you electric hammer drill,hole saw and saw blades...8pcs wood working cork drill