32 CHROME SPLINE LUG NUTS | 9/16-18 | RAM 2500 3500 FORD F250 F350 1987-1999 USA Set of 32 high quality forged steel lug nuts. Made of SCM 435 Cold Forged Steel. 60 degree taper bulge seat lug nuts for secure fit. 1x SPLINE LOCK KEY'S included! 7 SPLINES FOR SAFETY AND SECURITY.