4pcs Square Hole Wood Drill Bit Set Mortise and Tenon Drill Bits Mortise and Tenon Chisels Deep Square Hole Wood Drill Bits Woodworking Hole Cutter <p>6.4/8/9.5/12.7mm Square Hole Drill Steel Drill Bit for Woodworking Tools Hole Saw Tenon ChiselMaterial: 45</p> <p>Steel Square Hole Size: 6.4/8/9.5/12.7mmFeatures: This chisel set is perfect for drilling holes in woodReduce 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 Usage:</p> <p>Use Materials: Square hole drills are mainly used in woodworking. Square hole drills are used for square hole mortisers. They are specially designed for square hole drills and cannot be used for electric drills.</p> <p>Note: Due to the difference between different monitors, the picture may not reflect the actual color of the item.</p> <p>Please allow 1-3cm difference due to manual measurement and slight color variation for different display settings</p> Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.