1Applicable Model: Wheel lock nut key is replacement for Benz A?Class, B?Class, C?Class, Glk?Class, Clc?Class, Cls?Class; please confirm whether your model is applicable before buying. 2Highly Anti Theft: Wheel lock nut key uses unique design and encryption methods, so that it is difficult to copy or imitate, improve the effect of vehicle anti theft. 3High Strength: The lock wheel nut key is made of durable alloy steel with high strength and durability and can withstand high torque usage situations. 4Easy to Use and Remove: The nut key can be easily installed and disassembled, very simple to use, owners can easily manage and control their own vehicle anti theft. 5Safe and Rliable: The design and manufacturing process have undergone strict quality control and testing, and it has a high degree of safety and reliability, which can ensure the safety of the vehicle.