This is a pair of JConcepts Profiled SC Firm Tire Inserts. FEATURES: Fits JConcepts short course and similar SCT tires Grooves cut into the profile of inserts for high degree of driver to track feel Ultra durable, will not break down during racing Water resistant YOU WILL RECEIVE: Two JConcepts Profiled SC Firm Tire Inserts REQUIREMENTS: Installing between SC tires and wheels SPECIFICATIONS: Width: 1.6" (41mm) Thickness: 0.35" (9mm) Diameter: 4" (101mm) jxs 04/08/11 ir/jxs &