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.