1、10‑24mm Deep Drive Socket: This kit has 15 deep sockets, which are 10‑24mm respectively, can meet different needs, equipped with 3 extension rods for easy use 2、Laser Marking Size: These sockets have clear laser size markings, can quick and easy select the right size when in dim light 3、Hex Deepening Design: The hex deepening design enlarges the contact surfaces between socket and fastener, increases locking force, reduces wear, and prevents becoming round at corners 4、Special Storage Box: Each socket has a corresponding slot in the storage box, will not fall off easily, and the corresponding size is printed on the side of the slot for easy identification 5、Chrome Vanadium Steel Heat Treatment: The sleeve is heat treated and forged from chrome vanadium steel, the external is blackening, which is corrosion resistant, oil resistant and not easy to rust