Features: 1. It is very suitable for drilling on wood, with a mill or a morning coat. Suitable for all motors and press accessories. The square-hole drill is mainly used for woodwork. 2. Use with the head and the tension machine will result in a double effect. Hole drilling requires the use of electric drills, hammers and other tools. 3. Reduce the labor intensity of construction workers, accelerate the construction speed, and reduce the construction cost of construction, installation, renovation and decoration industries. 4. Dimensions: 6mm/6.4mm/8mm/9.5mm/10mm/11mm/12mm/12.5mm/12.7mm/14mm/15mm/16mm/18mm/19mm/20mm/22mm/25mm Specification: Material: High-carbon Steel Color: Silver Size: 6mm/6.4mm/8mm/9.5mm/10mm/11mm/12mm/12.5mm/12.7mm/14mm/15mm/16mm/18mm/19mm/20mm/22mm/25mm Package Includes: 1 x Drill Bit