Optimized Steel Hydraulic System. Chevron AW ISO 32 Hydraulic Oil 14oz (Z-X0042). Static Alloy Axles with Front and Rear Differential Locks. EVA Rubber Tires. Scale: 1 : 14. 10 Channel 2.4Ghz Radio. Battery Size:103 x 33 x 35mm / 4.05 x 1.29 x 1.37in.