General description Professional mushroom nail tire repair drill bit set designed for use with low-speed pneumatic drills. This 9-pack includes various sizes to accommodate different working situations, ensuring versatility and efficiency in tire repairs. Technical specifications Shank diameter: 3mm, 4.5mm, 6mm Material: Alloy steel Color: Silver Package Contents 9 x Drill Bits Other information Note: Light reflection and different displays may cause the color of the item to differ slightly from the actual product. The measurement allowed error is +/- 1-3 cm.