This is a pair of Hot Racing aluminum threaded 120mm shocks for the Axial AX10, HPI Wheely King, and other vehicles. Use these high-quality aluminum threaded shocks to improve the smoothness and efficiency of your suspension system. Features: Aluminum construction Threaded bodies 3.2mm shock shafts Teflon two-hole pistons Silver/clear shock bodies with black anodized accent caps, collars, and spring retainers Plastic lower shock eyelet Two spring options included: Harder 18 coil 1.2mm wire (blue) Softer 19 Coil 1.1mm wire (silver) Fully assembled, just add oil Tech Specs:Extended Length (Eye to Eye): 120mm (4.7 inch)Collapsed Length (Eye to Eye): 80mm (3.1 inch) Includes:2x Assembled Shocks2x Harder 18 Coil 1.2mm Wire Springs (Blue)2x Softer 19 Coil 1.1mm Wire Springs (Silver) Note:Requires silicone shock oil.May require additional hardware/modification if not used on the Axial AX10 or HPI Wheely King.