Set of 4 chisels, square hole drill bits, hollow steel chisels, woodworking tools set (1/4 - 1/2 - 5/16 - 3/8 inch)

General Description This set of four steel chisels is designed for drilling square holes in wood. It is specifically designed for use with a square-hole drill, such as a mortise and tenon machine. The chisels can also be used with an external square engraver and a hammer for manual applications. Technical Specifications Material: High-speed steel Hardness: 56 HRC Drill bit sizes: 6.4 mm (1/4 inch), 8 mm (5/16 inch), 9.5 mm (3/8 inch), 12.7 mm (1/2 inch) Applications This set of chisels is ideal for: Drilling square holes in woodworking Use in construction, installation, renovation, and the decorating industry