Square Hole Drill, Practical Stable 22 Mm Square Hole Drill Bits, High Hardness Reliable Wood and Other Wood Products Parti board

✅The bit is forged by bearing steel, with high hardness and long service life after overall heat treatment. ✅Universal handle shape, circular designs at the end of the drill, so as to making clamping more stable. ✅Suitable for density board, medium fiber board, particleboard, wood and other wood products, suitable for square hole drilling machine, square tenon machine. ✅U shape long chip drain grooves design, facilitate wood chip discharge, improve the efficiency of drilling. ✅Drill sleeve designs, the force of the drill sleeve edge is in a plane, effective protection to avoid the situation of cracking at the beginning of use.