Sharpness: Each spiral has been professionally polished to drill a perfect hole sharply. the self-tapping screw design is convenient for driving the wood drill bit manually. Heavy-duty steel: made of high-quality hardened oxidized steel material, strong and durable. it is the perfect tool for any outdoor sports, jungle crafts, woodcutter or handyman, etc. Versatility: Another part of this survival multi-tool is the pin tool. the eyed auger is has a pin wrench cutting point. use a hammer to form a nail the same size as the drill bit of the auger. Perfect size: Eye width: 1.5 inch, Inner diameter: 1 inch, cutting diameter: 1 inch. suitable for larger drill rods to obtain greater torque and easier drilling! Good helper: It will surely come in handy when starting a fire to customizing and creating equipment you didn't know you needed. Specification: Material: Alloy Steel Size Chart: size: 20x3.7cm/7.87x1.46inch Package Includes: 1 Piece Manual Auger 1 Piece Leather Case 1 Piece Carabiner Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful on-line shopping!