GDSMOTU 4pc Wheel Spacers for Dodge Ford 8 Lug, 2" Wheel Spacers 8x6.5 with 9/16" Studs for Dodge Ram 2500 3500,Ford F250 F350 E250 E350 ECONOLINE(Fit 9/16" Lugs Vehicle Only) It mainly fits for DodgeRam 2500 1994-2010Ram 3500 2003-2010FordF250 F350 only 9/16" 1975-1997 Thickness:2 inches/50mm; Vehicle bolt pattern:8X6.5/8X165.1; Wheel bolt pattern:8X6.5/8X165.1; Threads: 9/16". If you don't make sure whether this item fits to you, message us with your vehicle year, maker and model, we will find the item you need. The spacers are machined by CNC with 60 degree taper, bulge seat lug nuts. The studs of our spacers are grade 10.9, heat treated and hardened heavy duty studs for safety.