Traxxas premium 20 wt silicone shock oil is the perfect solution for all your RC needs. This 100% pure silicone oil allows precise vehicle suspension tuning for maximum performance, no matter where you drive. The precision-pour, twist-nozzle cap makes it quick and easy to fill shock bodies, without all the mess. The large 2 fl.oz bottle size is enough to fill all four shocks on most models. cSt viscosity specification ensures consistent performance with every bottle.