Exceeds OEM standard in material, strength and hardness of the aftermarket wheel. Of 4 Car Wheel Hub Centric Rings OD 106.1mm To ID 84.1mm Wheels Center Shaft Polycarbonate Hub Rings Set Thus any vibrations caused by the gap is eliminated., Technical Specification: I., D. Hub centric rings? | Chevy Silverado and GMC Sierra Forum When these match our hub ring description, they are the right size. (outer diamter) - fit rim bore 106mmSet contains - 4 hub centric rings Technical Note: To determine proper fitment you need to do a two things. Corrosion resistant and long lasting , No more vibrations Then find out the vehicle hub size, i., e., I., D. (inner diamter) - fit vehicle hub 78., 1mmO., D. GoldenSunny 78.1 to 108 Hub Centric Rings, Black Plastic Hubcentric Rings Compatible with Chevy Silverado Tahoe GMC Sierra 1500 Yukon XL, Pack of 4, Hubs & Spindles - Canada Product Information: One set of 4 hub centric rings with O., D. Hub Rings; 106mm/78.10mm (Universal; Some Adaptation May Be Required) ; Was $13.99 ; Coupon. Apply 10% Discount at Checkout. One coupon per order | Details ; Apply... Precision polycarbon hub centric rings