M14x1.5 thread wheel nut with radiused seat to suit Mefro and Mercedes wheels.
Zinc plated body with stainless steel cap.
Please note that these nuts have the smaller seat radius and as such are not suitable for use on VW/Audi/Porsche wheels.
Also, they're made in 2 pieces - the body is Zinc plated steel, the cap is stainless. For this reason if there is more than around 23mm of stud left after fitting the wheel, you'll likely pop the cap off the end when fitting.
Fine for standard length studs though, and if your studs aren't too long you wont have an issue.