This is a pair of Pro-Line Closed Cell Foam Inserts for 2WD 1/10 scale Front Buggy Wheels. FEATURES: For use on tracks that require a slightly firmer insert Closed cell foam construction eliminates air gaps INCLUDES: Two Pro-Line Closed Cell Foam Inserts REQUIRES: 2wd 1/10 scale front buggy tires Tire Glue DTXR2000, DTXR2002 jxs 08/29/11 ir/jxs