Main features: -Aluminum shock bodies, spring cups, and spring adjusters -Fully threaded for rapid adjustment -Anodized shock bodies -Upper and lower shock ends includes red anodized aluminum balls -STS304 black medium springs (1.159kg/51.50mm) -3.5mm thick shock shafts -Shaft exits through double O-ring seals -Easy load shock seal assembly -Fits 1/8 scale crawlers & trucks What's included: -Anodized aluminum shock bodies x 4 -STS304 black medium springs x 4 -All necessary hardware to finish the shocks -Assembly instructions -Bottle of shock oil Specs: -Length: 124mm (Mounting hole to hole) -Shock Body Diameter: 14mm -Spring Diameter: 19mm -Spring Length: 83mm -Full Shaft Travel Range: 45mm -Shaft Diameter: 3.5mm