General description Professional mushroom nail tyre repair drill bit designed for use with low-speed pneumatic drills. Made from high-quality alloy steel, these bits offer exceptional hardness, wear resistance, strength, toughness, heat resistance, and corrosion resistance. The triangular rhombus cutting design ensures anti-skidding and a more secure grip during use. Technical specifications Material: Alloy steel Shank diameter: 6mm/8mm Measurement allowed error: +/- 1-3cm Package Contents 2 x Drill Bit Other information