Tools: 2mm / 2.5mm / 5mm / 6mm / 3mm / 4mm Socket, Cross-Screwdriver, Flat Screwdriver It is treated by anodic oxidation process, fine and nonslip It is easy to grasp and operate It is S2-alloy-steel with high hardness and durability Small size, easy to use It is a necessary tool for cyclists Multi-layer electroplating and dual-treated-surface can improve the anti-rust performance of the tool and the durability and strength of the tool It is attach with a buckle that can be fastened on the belt, and the buckle can be removed It is not easy to lose and more to carry High-precision hexagon socket screws are more to use, and the bites screws are not easy to damage the screws