This is the Robinson Racing 38 Tooth Spur Gear and 15 Tooth Clutch Bell Combo|
for the Traxxas Revo.
Constructed of hardened steel for heavy duty use
38 Tooth Spur Gear and 15 Tooth Clutch Bell with three 3mm lock
Installing on vehicle
15 Tooth Clutch Bell; 38 Tooth Spur Gear;
Thickness: (27.1mm) 0.25" (6.3mm)
Diameter: (25.8mm) 1.6" (40mm)
Do not use Traxxas Revo clutch bells or spur gears with this combo,
they are not compatible.