Review on 🦍 Gorilla Automotive 30037B Acorn Open End Bulge Lug Nuts: Superior Quality for 12mm x 1.50 Thread Size by Chase Cooper

Works like clamping nuts. I bought them for several reasons. 1) I went with aftermarket wheels and my 19mm would barely fit in the space with the nut, this 17mm sorted that out. 2) They are lighter than almost all aluminum options. They're about 2 grams heavier than the 949 racing lugs for the Miata, but they cost over $100!