This is a pair of the DuraTrax Short Course Tire Inserts. FEATURES: Installs inside tires to provide proper degree of support and help to maintain shape INCLUDES: Two DuraTrax Short Course Tire Inserts REQUIRES: Installing inside short course tires SPECS: Width: 1.4" (37mm) Thickness: 0.35" (9mm) Diameter: 3.4" (87mm) jxs 06/23/11 ir/jxs