This is a pair of the 2 - 2.5" Robart Foam 1 Wheel Inserts. FEATURES: For Robart straight and diamond tread wheels 2 - 2.5" (50.8 - 63.5mm) diameter INCLUDES: Two Robart Foam 1 Wheel Inserts REQUIRES: Inserting between wheel and tire SPECS: Length: approx 10.6" (270mm) Diameter: approx .5" (12.7mm) rda 8/2/06 ir/jxs