Auniwaig Forstner Drill Bits, 30mm Dia Wood Hole Saw, Auger Opener Cemented Carbide, 90mm Length Woodworking Hinge Hole Drilling Boring Bit Cutter, Straight Shank, Black, 1 Pcs

Auniwaig Forstner Drill Bits The bit includes a center point which guides it throughout the cut and incidentally spoils the otherwise flat bottom of the hole.The cylindrical cutter around the perimeter shears the wood fibers at the edge of the bore, and also helps guide the bit into the material more precisely.Made from high quality carbide tungsten steel and being hot-treated,sharp edge,high hardness, accurate positioning,high precision,smooth cutting,impact resistance,high toughness.more smooth,less noise.For drilling flat bottom holes with no chippings in any thickness of soft wood.

For drilling holes in any direction and making arched openings.

For drilling partially overlapped flat bottom holes for easy mortising.Suitable for pistol drill, bench drill, vertical drilling machine hand held electric drill, stand motor-driven drilling machine and mobile ribbon type magnetism drilling machine,etc.Perfect used for drilling precision holes in most of different types of wood, such as drawer, mounting spherical door shoot tip, perforation on wood products, and plastic products etc.