Features: High-quality aluminum alloy, high hardness, strong and wear-resistant, and has long service time. Allen wrench is equipped with 4 screw replacement heads to adapt to various sizes of screws. The chain removal tool is cleverly designed, the screw thread fixed firmly, and the operation is simple. Wrench adn screws heads are magnetically adsorbed, which saves time and is convenient to take. Small and lightweight, easy to carry, it is a nice bicycle maintain tool for cycling enthusiasts.