Woosien - 4PCS Woodworking Square Drill Bits Set hss Wear Resistant 1/4in 5/16in 3/8in 1/2in Countersink Bit

Specification: Item Type: Woodworking Square Hole Drill Bit Set Material: HSS Punch Size: 6.4mm (1/4 inch) 8.0mm (5/16 inch) 9.5mm (3/8 inch) 12.7mm (1/2 inch) Features: 1. TIME SAVING: These woodworking tenon hole cutters can reduce the labor of construction workers, speed up construction, and reduce construction costs in the construction, installation, renovation, and decoration industries. 2. MULTIPLE SPECIFICATIONS: Users can use different specifications of square hole drills with the right power of the square hole machine to drill the square holes that meet the requirements. 3. HIGH-SPEED STEEL: These square hole drill bits are made of high-speed steel and are heat-treated to produce a high-hardness drill bit and a sharp square chisel for long-lasting use. 4. EASY TO USE: This drill bit can be used with a mortiser for double the impact. Square holes must be drilled with a drill, hammer, or other tools. 5. PRIMARY USE: These square drill bits are ideal for drilling square holes in