4pc 3/4" (20mm) Thick - Hubcentric 5x4.75 to 5x4.75 Wheel Spacers with Lip (70.5mm Bore, Metric 12x1.5 Studs/nuts) for Chevy Blazer Camaro Corvette S10 GMC S15 Jimmy Pontiac Trans Am Black (0.75") [APPLICATIONS] 1987-2005 Chevy Blazer. 1982-2003 Chevy Camaro (Rear Hub). 1984-2013 Corvette. 1991-2005 GMC Jimmy. 1984-1997 Pontiac Trans Am. And Many More! See Description for Full List. [SPECIFICATIONS] Set of 4. 3/4" (20mm) Thickness | 5x4.75" (5x120.65) Bolt Pattern | 70.5mm Hub Bore | 12x1.5 Threaded Studs/Nuts. [MANUFACTURING] CNC Machined to exact specifications from Aerospace Billet Aluminum. The 70.5mm bore ensures a tight fit on the hub. And the 70.5mm wheelcentric lip functions as an extension of the hub. Undergoes anodizing process to prevent corrision. Includes pre-installed heat treated 10.9 grade studs. [PRODUCT BENEFITS] Hubcentric Design ensures exceptional wheel balance and eliminates chance of vibration. 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. [FITMENT NOTE] Not compatible with OEM wheels. The included lug nuts, along with your OEM wheel studs, will extend past the surface of the spacer. Please verify that the back of the wheels have "pockets" / cavities large enough to accommodate for this. Every 3/4" (20mm) spacer on the market will have this issue; if your wheel is unable to accommodate for the protruding nut/stud, we recommend looking at thicker spacers.