Design: professionally grind each spiral with self-tapping pilot design, and perfect, very convenient for manual drilling. Perfect Size: Suitable for larger wooden rods to obtain greater torque and easier drilling! Camping Survival Tool: Throw it into your jungle craft backpack as the jungle craft tool, instead of other manual primitive tools and jungle craft survival tools! Multiple Uses: used in cork/green wood projects such traps, chairs, mallets, ladders, maple syrup taps, and survival shelters. Throw it into your jungle craft backpack as the jungle craft tool instead of other manual primitive tools and jungle craft survival tools. Colour:Black Material:iron Package Contents: 1 * Diamond 1 * cloth bag Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.