One Pair (2) of Wheel Spacers – 8 x 6.5” – 2" Thick – 9/16” Studs - 50 Caliber Racing CNC milled using high quality aerospace aluminum for durability and fit. Lug-centric design. Includes tapered lug nuts to mount to your wheel. Available in several bolt patterns to fit virtually every car or truck ever made. CHEVROLET / GMC / HUMMER: 3/4 Ton C20 Pickup, Suburban, Van (All years until 1987 - non dually) 1 Ton C30 Pickup, Suburban, Van (All years until 1987 - non dually) 2500 & 3500 Trucks & Vans - non dually (All years until 2010) Avalanche 2500 (02-08) Suburban K2500 (All years until 2010) Yukon XL 2500 (All years until 2010) H1 civilian (All), H2 (All) GM Specific NOTE: These spacers have 9/16” studs. Many 1988-up GM models use 14mm studs. Same bolt pattern but will Check your lug/stud size and thread pitch before ordering! Dodge: Ram 3/4 ton Truck (all years) Ford: F250 and F350 Trucks, E250 and E350 Vans (All years before 1998) NOTE: These spacers are lug centric and are not compatible with hub-centric wheels. Some vehicles above use different size lugs/thread pitch so make sure you measure your vehicle before purchasing. Installation requires one set of open end tapered lug nuts to bolt the adapter to the vehicle. Most factory lug nuts are not compatible. These are NOT included and are sold separately. Be advised that you may need to modify your existing studs if they protrude past surface of spacers. Not for use with dually rear axles.