1Anti Theft: Each of the lug nut key has the unique design and encryption methods, difficult to copy or imitate, improving the effect of vehicle anti theft security. 2Durable Material: The nut screw removal key is made of durable and reliable material, high strength and wear resistant, having a long service time. 3Easy to Install: The wheel nut lock key has a simple installation, convenient and time saving, don't need too much tools or complicated steps. 4Perfect Fitness: The lug nut socket key uses the delicate technology design to match all specifications of the original part, can fit the original car better. 5Applicable Model: The lug nut lock key is replacement for Benz A?Class B?Class C?Class Glk?Class Clc?Class Cls?Class Clk?Class E?Class Sl?Class Slk?Class M?Class C300 C250 C350 E320 E204 E211 E212.