Auniwaig Forstner Drill Bits, 40mm Dia Wood Hole Saw, Auger Opener Cemented Carbide, 90mm Length Woodworking Hinge Hole Drilling Boring Bit Cutter, Straight Shank, Black, 1 Pcs

【Parameter】- The drilling diameter of forstner drill bits is 40mm / 1.57-inch, shank diameter is 10mm / 0.39-inch and total length is 90mm / 3.54-inch. Rotation speed (suggested) is 18000-24000 RPM and feed speed (suggested) is 8-12M/Min. Straight shank, cemented carbide cutter and high-quality carbon structural steel (45# steel) body.
【Features】- Tungsten carbide cutting tip with special heat treatment for sharp cutting edge, high hardness, non-burrs and durable use. Arc curve design head for easy chip-removal, more efficient perforation.
【Advantage】- Small incision resistance to improve the opening speed, chip removal easily. The head adopts arc curve design for easy chip-removal and no tremor. The perforation is neat, smooth, no broken edge. Work noise is small. Easy to install, easy to use, only needs to be installed in the ordinary hand drill that can be used.
【Applications】- Suitable for bench drill; vertical drilling machine; hand held electric drill; impact drill; CNC carving machine and other drill press. Can be used for drilling holes on wood and plastic products. Wood, plastic, plywood, gypsum board and other materials you need to exquisite perforation.
【Warm Tips】- Can not be used for cutting metal holes. Before drilling, be sure no nails or other metal objects in wood to avoid causing damage to forstner drill bits. Please note the cutting depth before you purchase.

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