10-25mm Hex Shank Flute Auger Drill Bit Cutter Core Drill Bit Wood Drilling Bit. For making plugs in soft and hardwood. 13 Step Spiral Groove Conical Cone Drill 5-35mm Titanium HSS Bit Set Cutter. Versatile tools for making cones on round or square pieces; Dowel up to 3 "long, inject plug automatically.
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