1. Material: high speed steel 2. Product use: suitable for power tools with chuck or connector, suitable for removing screws or screws with broken nuts on hard wood or wood ply 3. Hexagonal design, the drill can be firmly clamped, no slippage 4. Bit edge, sharply and durable 5. Fine teeth and long threads, good bite 6. With the use of electrical drill, save time and energy 7. With storage box, with access to use, tools are not easy to lose 8. Box size: 94 x 65 x 18mm 9. Weight: 125g/set
