bqkkwin square hole drill bit, 1pcs woodworking mortiser square drill bits, spiral drill bits kits mortise press, wood drill

Drills precise holes with little pressure -- Using different specifications of the square hole drill, matching the appropriate power of the square hole machine. package include 1pc 1/4Inch(6.4mm) square mortise chisel & Bit. | Made of high-speed steel, hardness 56HRC, lengthened core, sharp cutting edge, continuous blade, quick cutting, high efficiency, durale and practical, heat treatment, long life for use. | Great for drilling square holes in wood with a mortising machine or a mortising attachment square hole drill is mainly used for woodworking aspects. | High 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 industries. | Use for the opening square hole, suitable for construction, installation, renovation, decoration industry, etc.

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