12.7mm Square Hole Drill Hole Reaming Square Auger Square Eyes Mortising Chisel DIY Woodworking Tool

Features:
Made of premium quality high speed steel with high hardness and durability, anti-rust.
Crushing round bits and square outer wall, broken slag dust can be discharged from the tube.
Exquisite blade grinding process, edge is shar-per and more sturdy.
Reduce labor intensity of construction workers and speed up the construction.
Drilling square holes in wood with a mortising machine or a mortising attachment.
Suitable for construction, installation, renovation, decoration industry, etc.