2pc 1" HUBCENTRIC 5x4.75 Wheel Spacers (70.3mm bore & 7/16" Studs) for many older Buick Chevy Chevrolet Oldsmobile (5x120.65 5x120.7, 7/16"x20, 25mm Adapters) [APPLICATIONS] Must Verify Year in Description. Buick Apollo LeSabre Regal Skylark. Chevrolet Bel Air, Camaro, Caprice, Chevelle, El Camino, Impala, Malibu. Oldsmobile Cutlass, Cutlass Supreme, Starfire. And Many More! See Description for Full List of Years/Makes/Models. [SPECIFICATIONS] Set of 2. 1.0" (25mm) Thickness | 5x120.65 or 5x4.75 Bolt Pattern | 70.3mm Hub Bore | 7/16"x20 Threaded Studs/Nuts [HUBCENTRIC DESIGN] Ensures exceptional wheel balance and eliminates chance of vibration. The 70.3mm bore ensures a tight fit on the hub. And the 70.3mm wheelcentric lip functions as an extension of the hub. [MANUFACTURING] CNC Machined to exact specifications from Aerospace Billet Aluminum. Undergoes anodizing process to prevent corrision. Includes pre-installed heat treated 10.9 grade studs. [PRODUCT BENEFITS] Gives your vehicle a more aggressive stance. Improves handling characteristics and stability. Fixes brake caliper clearance issues. Increases tire clearance to allow installation of wider wheels and tires