WORK offers a range of lug nuts to be use with WORK Wheels and many other brands of after market wheels. WORK lug nuts are standardized to use with any after market wheel with 60 degree conical taper seat (will not fit OEM seat wheels). High strength and quality, using lightweight aluminum in anodized finish. RS Type = Closed-End / Aluminum / Standard Length / Security Lock and Key Included / 16 lug nuts, 4 locking lug nuts 12x1.25 thread pitch fits most Nissan/Datsun, Subaru, Suzuki, Infiniti** 12x1.5 thread pitch fits most Acura, Honda, Toyota, Mazda, Mitsubishi, Isuzu, Daihatsu** ** Please note that this serves as a general guide, but you should verify with your owners manual on the lug nut thread pitch of your specific vehicle, as it may differ within vehicle makes. If you are unsure of the thread pitch you require, please contact us directly before ordering. ** RS Type: DO NOT USE IMPACT WRENCH! *** Uses 21mm socket for both lug nut and lock key adapter. Always check your vehicle owners manual for proper torque specification for safe vehicle operation.