General description These 4PCS Woodworking Square Drill Bits Set is designed for efficient drilling of square holes in wood. Made from high-speed steel (HSS), these bits are wear-resistant and ideal for use in construction, installation, renovation, and decoration projects. The set includes four different sizes to meet various drilling needs. Technical specifications Material: HSS Punch Sizes: 6.4mm (1/4 inch), 8.0mm (5/16 inch), 9.5mm (3/8 inch), 12.7mm (1/2 inch) Usage Ideal for drilling square holes in wood Can be used with a mortiser or mortising attachment for enhanced performance Square holes must be drilled with a drill, hammer, or other tools Other information Package includes: 4 x woodworking square drill bits, 4 x storage box