Features 1. Made of high quality 45 # steel, it's exceptionally strong, impact resistant and wear resistant. Not easy to breaks due to vibration. 2. The groove anti-slipping design can work for a long time, making the work feel comfortable, improving work efficiency and practicality. 3. Widely used in: family, outdoor, camping, farm. The anti-slipping design that works long hours makes the work feel comfortable. 4. Five different sizes: 32mm / 38mm / 42mm / 45mm / 50mm. the 4 sockets are square, round and hexagonal, different shapes can be selected and matched according to the split angle and difficulty of the wood. Specification Material: 45 # Steel Color: Black Size: 32mm / 38mm / 42mm / 45mm / 50mm Package Includes: 1 x Drill Bit Set