Super Sharp- Each spiral is professionally ground to precisely drill perfect holes. Self-tapping screw design for easy manual woodworking drill. Sturdy Steel- Made of high quality hardened oxidized steel, sturdy and durable. The perfect tool for any outdoor enthusiast, bushcraft, lumberjack or handyman and more. Perfect Size- 1.5 inches, inner diameter: 1 inches, overall length: 10.3 inches, cutting diameter: 1 inches. Use with larger boring bars for more torque and easier boring Patent Protected Product, Patent No.: 008944581-0001 Patent Protected Product {Patent No. 008944581-0001}Camping Survival Gear- Put it in your jungle adventure backpack, like the ultimate jungle adventure tool, not in the jungle adventure Other hand survival tools. It even comes with a leather case Patent Protected Product, Patent No.: 008944581-0001 Patent Protected Product {Patent No. 008944581-0001}Survival Tool- This hand drill may be the most important survival gear you own. Building emergency shelters is a breeze with our Settlers Wrench bushcraft gear. Another part of this survival multitool is the pen tool. Scotch eye drills have a cutting tip for pin wrenches. Drive a dowel the size of a wood drill bit into the branch.