ATOZTOOLS 1/2Inch Square hole drill bits wood mortising chisel for Woodworking, Auger Tool Mortise drill bit drilling dia 12 mm.
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Made of high-speed Hardened steel, lengthened core, sharp cutting edge, continuous blade, quick cuttings, high efficiency, durable and practical, heat treatment, long life for useGreat for drilling square holes in wood with a mortising machine or a mortising attachment Square hole drill is mainly used for woodworking aspectsHigh performance flute design geometry for superior chip extraction Reduce labor intensity of construction workers, speed up the construction speed, reduce construction costs for construction, installation, renovation, decoration industriesUse for the opening square hole, suitable for construction, installation, renovation, decoration industry, etc.