BQLZR Purple Aluminum Alloy RC Steering Servo Saver Complete 102057 Upgrade Sets for HSP 1:10 Buggy/Truck/Car Pack of 1 Set Aluminum alloy material,high protection and long durability Suitable for HSP RC 1:10 Model Car Total size: 31.5x30mm/1.24x1.22''(LxW) Model Scale: 1:10 The remote control cars Steering Servo Saver Complete are suitable for HSP RC 1:10 Model Car.