Atoplee Woodworker 5/8 Inch Square Hole Drill Bits Mortising Chisel Set, Mortise Chisel & Bit Set;

Features:

Professional wood drill bit, suitable for construction, installation, renovation, decoration industry, etc.

Special steel, heat treatment, HRC48~50, high hardness, lengthened core, high concentricity.

It will get double effect by matched use with mortise and tenon machine, the square hole punching needs to use electric drill, hammer & other tools.