This Project Kics 10mm spacer lug is specified as a thick 12x1.50 special lug nut designed for use with wide tread spacers. The listing identifies it as a component intended to work with wide tread spacer setups, providing the required lug profile and thread specification to pair with those spacers. It’s offered for shoppers fitting spacers that call for this particular lug nut type.
Project Kics 10mm Spacer Lug Thick 12x1.50 Special Lug Nut For Wide Tread Spacer