Good performance: Professional grinding for each spiral, can easily penetrate the hardest woods. Can drill perfect holes. Self-tapping screws designed for easy drilling. Material: Manual auger is made of 45 steel and is sturdy and durable. Superb workmanship. Excellent performance and ease of use. Easy to use: Manual auger is simple to use, find a wooden stick to insert into your drill hole, attach it and start turning the stick with the hand drill to make the hole. Easy to understand operation and easy to carry. Range of applications: Multi-purpose manual survival drill bit can be used for ladders, shelter construction, etc. It helps you drill deep enough to secure your tent stakes. Size: : 25 x 230 mm. It is the ideal tool for all outdoor activities, DIY, camping, crafts, etc.