This is a pair of RJ Speed Rear Axle Height Adjusters with .062 Offset. FEATURES: For use with RJ Speed cars to slightly raise rear section INCLUDES: Four RJ Speed Rear Axle Height Adjusters REQUIRES: Installing on both sides of hubs on rear axles SPECS: Thickness: 0.17" (4.3mm) Offset: .062" (1.6mm) jxs 03/08/11 ir/jxs