Easy to install and durable Includes spare springs Provides damping effect Suitable for 1/10 RC car crawlers Hole to hole length (uncompressed): 120mm Length after compression: 85mm Shock body diameter: 10mm Spring body diameter: 15mm Shaft diameter: 3.5mm Rod end: 3mm Color: yellow + black Material: metal Package contents: 4 x RC car shocks 8 x RC car spare springs Note: Oil is not included; you need to add oil separately. The specified length refers to the mounting hole to hole distance. Only the items listed above are included; other products are not included. Note: Light reflection and different display settings may cause slight color variations between the image and the actual item. Measurement allows an error of +/- 1-3cm.