This is the optional Pinion Gear 21T [1]Mode 1[IMAGE] for use with the Hot Bodies Ve8 Buggy (HBSC7535). FEATURES: Steel construction INCLUDES: One 21 Tooth Pinion Gear REQUIRES: Attaching to Ve8 motor SPECS: Diameter: 23mm (0.91") Inner Diameter: 5mm (0.20") lmm 03.02.10 ir/jxs 1. #