uxcell Forstner Drill Bits 30mm, Tungsten Carbide Wood Hole Saw Auger Opener, Woodworking Hinge Hole Drilling Boring Bit Cutter (Beige, Silver Tone)

Made from cemented carbide (tungsten carbide) blade and being hardened and tempered.

Featured with sharp edge, accurate positioning, high hardness, impact resistance, smooth cutting, high toughness.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.Drilling diameter < 40mm, maximum speed: 2000rpm; Drilling diameter ≥ 40mm, maximum speed: 1200rpm.