OliphousSuper Sharp- Professional grinding for every spiral, aggressively sharp to drill the perfect hole. Self-tapping lead screw design for easy manual driving of wood drill bits. Sturdy Steel - Made of high quality hardened oxidized steel materials, sturdy and durable. A perfect tool for any outdoorsman, bushcrafter, lumberjack or handyman etc. Perfect Size- 1.5 inch, Inner Diameter: 1 inch, Total Length: 10.3 inch, Cutting Diameter: 1 inch. Suitable for larger drill rods for greater torque and easier drilling Survival Tools - This hand drill may be the most important piece of survival gear and gear you own. Building an emergency shelter is a breeze with our Settlers Wrench bushcraft equipment. Another part of this survival multi-tool is the pen tool. The has a cutting tip for a pin wrench. Hammer into a branch for a pin the same size as the wood drill.