- ćSIZEć6.4mm / 1/4inch, 8mm / 5/16inch, 9.5 / 3/8inch, 12.7mm / 1/2inch square chisel width, 47mm, 51mm, 54mm, 75mm cutting depth, 160mm, 205mm, 210mm total length.
- ćTIP AND EDGEćThe best-designed drilling point tip and 4 cutting corners enable fast drilling with small opening resistance, and penetrating into working pieces of wood in precise opening size very smoothly and fast.
- ćMATERIALćMade of High-carbon steel, through heat processing, with high hardness (48-50 HRC) drill bits, and sharp-edged square chisel, durable and lasts long.
- ćADVANTAGEćWith 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.
- ćOPERATIONćUsed with mortise and tenon machine with double effect, and electric drill, hammer and other tools is required for punching square hole in wood.
