Purchased at Discount tire when got a new set of tires installed. The lug nuts alone were over $100, however, the chrome turned dull after one Ohio winter. I think it was the cold temps, as the vehicle was not driven in salt, and always garaged. Never seen that before, but the lug nuts themselves are still in perfect working order. Must be a lesser quality chroming process on these. I'm sure Discount Tire gets them from a large manufacturer, but not sure who. Anyways, these are the larger style lug nut with the larger body & cone for factory wheels, in 14mmx1.5 thread pitch, used on a 2018 F150. Pretty sure this thread pitch was new for F150 in 2015 to current, as the prior generation trucks use a 14x2.0 thread, but please verify fitment before buying. Very nice set for half the price if lack of shiny chrome isn't a concern to you. Thank you!