This is the RC4WD 110mm King Scale Shock Spring Assortment. FEATURES: Fits the RC4WD Z-D0065 King Off-Road Dual Spring Shocks Changes dampening rate of shocks from the stock rate of 0.8 to 2.0, 1.6, 1.1, and 0.4 depending on track conditions Steel construction, blue in color Each spring has a small color marking on bottom to determine rate YOU WILL RECEIVE: Four each of the following springs 2.0 Spring Rate "Black" 1.6 Spring Rate "Red" 1.1 Spring Rate "White" 0.4 Spring Rate "Yellow" SPECIFICATIONS: length: 1.81" (46mm) Outer diameter: 0.7" (17.7mm) Inner diameter: 0.58" (14.7mm) Weight: 1.94oz (55g) COMMENTS: King Off-Road is a registered trademark of the King Off-Road Shock company. The King off-road logo is a property of King Off-Road Shocks. jxs 10/22/15ir/jxs