The Square Hole Drill Bit creates perfect squares every time effortlessly! You'll definitely need this for your next project!
Product Features: 1. Square hole drill can not be used on an electric drill, drill square holes need to fit a square hole drill drilling (mortise and tenon machine) to use. Mortise and tenon square hole drilled by the terrible + outer sleeve in the middle of the combination. 3. Reduce labor intensity of construction workers, speed up the construction speed, reduce construction costs for construction, installation, renovation, decoration industries. 4. Use matters: Square hole drill is mainly used for woodworking aspects.
Product Specifications: 1. Material: high-speed steel, 2. Hardness: 56HRC 3. Clamping shank diameter: 19 mm / 0.75 in (Round) 10 mm / 0.39 in diameter slotted (front square) Middle terrible diameter--total length: 19.5 cm / 7.68 in , diameter: 6.8 mm / 0.27 in