PKT 16mm Square Hole Drill Bit, 5/8" High-Carbon Steel Hollow Chi...

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Chisel Side Width: 5/8 inch / 16mm; Chisel Drilling Depth: 72mm / 2.8 inch; Total Length: 213mm / 8.4 inches. The best designed Drilling Point tip and 4 Cutting Corner to enable the fast drilling and penetrating into working pieces of wood very smooth and fast. It will get double effect by matched use with mortise and tenon machine. The square hole punching needs to use electric drill, hammer and other tools. With long drill core and square chisel, easy to lock the hole on the wood, can reduce labor intensity of construction workers, speed up the construction speed, reduce construction costs. Used with mortise and tenon machine with double effect, and electric drill, hammer and other tools is required for punching square hole in wood.