This is the optional 48 Pitch 15 Tooth Steel Pinion Gear for the Axial Wraith Rock Racer, AXID9018. FEATURES: Constructed of hardened steel for long life INCLUDES: 48 Pitch 15 Tooth Steel Pinion Gear with Set Screw REQUIRES: Fastening to motor shaft SPECS: Gear Pitch: 48 Number of Teeth: 15 jxs 07/26/11 ir/jxs