4 Square Hole Wood Drill Bit Set, Compatible with Mortise and Tenon Joints, Deep Square Hole Cutting Tools for Woodworking-FX-

6.4/8/9.5/12.7mm Square Hole Drill Bit for Woodworking Tools Hole Saw Mortise Chisel Material: 45 steel square hole size: 6.4/8/9.5/12.7mm Features: This chisel set is perfect for drilling holes in wood. Reduce the labor intensity of construction workers, speed up construction, and reduce construction costs in the construction, installation, decoration, and decoration industries. 3/4 Collar Mortiser Attachment Use: Use is important: Square hole drills are mainly used in woodworking. Square hole drills are used for square hole mortising machines. They are specially designed for square hole drills and cannot be used for electric drills. Note: Due to the difference between different monitors, the picture may not reflect the actual color of the item. Please allow 1-3 cm difference due to manual measurement and slight color variation for different display settings