1. Material: aluminum alloy 2. Application: home DIY 3. Material: stainless steel 4. Durable and easy to use. 5. Easy to operate, use the minimum speed on the bit and apply a little pressure to remove burrs. 6. Quickly repair damaged bolts and tighten nuts into place. 7. Simplify the repair process without replacing expensive or hard-to-find hardware. 8. Suitable for stainless steel, hardened steel, low carbon steel, copper, brass, aluminum, fiberglass, wood, plastic