Revo 3.3 or E-Revo, Dual Rate Silver Plated Shock Springs full set of 4 Revo 3.3 Dual rate Shock springs set of 4 These have been plated to a chrome like finish will not rust Provide both a stock ride plus the stiff ride for those tight turns and big jumps Fits the Traxxas 1/10th scale E-Revo, Revo, Slayer Pro, Summit, Jato, 1/7th XO.