Set of 4 square drill bits for woodworking, steel mortising chisels, hole saw, power tools for carpenters, diameters: 1/2, 1/4, 5/16 and 3/8 inch

High quality – these square hole drill bits are made of heat-treated steel, with high-hardness drill bits and a sharpened square cutting edge for a long service life.

Widely used – Ideal for drilling square holes in wood with a mortiser or other attachment Mortising.

Easy to use: its efficiency is multiplied when used with a mortising and tenoning machine. Punching square holes requires the use of an electric drill, hammer, or other tools.

Save time! These mortising bits for woodworking reduce the physical strain on construction workers, speed up projects, and lower construction, installation, renovation, and decorating costs.

Precise drilling with low pressure: thanks to square drill bits of various specifications and a suitable square drilling machine, you can create square holes in the required dimensions: 1/2 inch (12.7 mm), 1/4 inch (6.4 mm), 3/8 inch (9.5 mm), and 5/16 inch (7.94 mm).