Set of 4 square woodworking drill bits, steel mortising chisels, hole saw, power tools for woodworkers, 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 sharp square cutting edge for a long service life. Widely used – Ideal for drilling square holes in wood with a mortiser or mortising attachment. Easy to use: Its efficiency is greatly increased when used with a mortising and tenoning machine. Drilling square holes requires the use of a power 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: With square drill bits of different specifications and a square drilling machine of suitable power, you can make square holes with 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).