Product Size: 6.4 mm, 8 mm, 9.5 mm, 12.7 mm, 14 mm, 16mm.
Product Material: Square hole drill bits are made of HRC48~50 high-speed steel, Heat treatment, Drill bit has a high hardness, which is not easy to break and break.
Product Details: The square hole drill widens and lengthens the chip discharge groove, which is convenient for removing wood chips. The force on the edge of the drill sleeve is uniform, extending the service life.
Advantage: These woodworking inlay chisels can reduce the labor intensity of construction workers, speed up construction, and reduce construction costs in the construction, installation, renovation, and decoration industries.
Wide Application: Suitable for all mortise and drill accessories, which can greatly improve the working efficiency of carpenter.