Easy to install and durable Includes spare springs Provides damping effect Suitable for 1/10 RC car crawlers Hole-to-hole length (uncompressed): 90mm Length after compression: 70mm 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 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 error allowance: +/- 1-3cm.