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- Material: High-speed steel, Use matters: Square hole drill is mainly used for woodworking aspects.
- 2 sizes : 10mm/16mm. Length: 203mm(10mm diameter); 208mm(16mm diameter)
- Hollow Mortising Chisel Bits are for making square mortises in one stroke and oblong mortises with each succeeding stroke.
- Reduce labor intensity of construction workers, speed up the construction speed, reduce construction costs for construction, installation, renovation, decoration industries.
- Square hole drill can not be used on an electric drill, drill square holes need to fit a square hole drill drilling (mortise and tenon machine) to use. Mortise and tenon square hole drilled by the terrible + outer sleeve in the middle of the combination.