4pcs Woodworking Tools HSS Square Hole Drill Bit Auger Bit Steel Mortising Drilling Craving Carpentry Tools Woodworking Drill

Specifications: 1.This mortising chisel set is great for drilling square holes in wood. Reduce labor intensity of construction workers, speed up the construction speed.

2.Fits mortising attachments with 3/4 collars. Mainly used for carpentry, applicable to the construction, installation, decoration industry.

Item Name: Square Hole Drill Bit

Material: HSS

Features: Portable, Durable, Woodworking Tool

Square Hole Size: 6mm, 6.4mm, 8mm, 10.0mm, 12.7mm (Approx.)