1pc 6-16Mm Woodworking Drill Bit Square Hole Chisel Mortise Chisel Hole Opener Woodworking Mortise Chisel Square Hole Drill Tool(10mm)

-Square hole drills are mainly used in woodworking -Professional wood drill bits, suitable for construction, installation, decoration and decoration industries. -The utility model uses the impact force of the hammer to transmit to the outside in the hole drilled by the revolving body, crush the round hole and square head wall of the material, process the square hole at one time, and the dust can be broken and discharged from the tube. -Made of steel. Heat treatment, high hardness, long core, high concentricity. -Very suitable for drilling square holes in wood with a mortise machine or mortise attachment. Suitable for all mortise machine and drilling machine accessories.