Bought rear wheel spacers for 2016 Ram 3500 dually, I haul super heavy so am very worried about using spacers, especially ones that use chinesium wheel studs that can and will break under a heavy load. I bought amazon ones, that were advertised 14x1.5 threads, and the stock lug nuts got chewed up threading them on, which was due to poor machining of the threads from the amazon spacers. I obviously threw them out, and bought these wheel adapters USA spacers, the machining is good, they fit correctly (hub centric), transfer the load correctly and not on the wheel studs only. and the stock lug nuts threaded on perfectly. 5 stars, if I brake a spacer, I will definitely update this review Lol. Make sure you torque those lugs to the proper specification!