Square Hole Mortiser Drill Bit
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- 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.
- Reduce the labor intensity of construction workers, speed up the construction speed, reduce construction costs for construction, installation, renovation, decoration industries.
- Arc design, exquisite sharpens durable.
- Use matters: Square hole drill is mainly used for woodworking aspects.
- Product size: 1/4inch (6.4mm), 5/16inch (8mm), 3/8inch (9.5mm), 1/2inch (12.7mm).
- Weight: 1/4inch (6.4mm) - 122g, 5/16inch(8mm) - 138g, 3/8inch (9.5mm) - 153g, 1/2inch (12.7mm) - 217g.
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