This is an Optional Front Spring Set for the Associated trucks. These springs fit onto the shock absorbers.FEATURES: Five varieties of spring rates represented by different colors.INCLUDES: Two red 3.90 lb. springs (#7430) Two gold 3.70 lb. springs (#7425) Two blue 3.45 lb. springs (#7429) Two silver 3.225 lb. springs (#7428) Two green 2.99 lb. springs (#7427)REQUIRES: The remainder of the front truck shocks.SPECS: Length: 2.25" (57mm) Diameter: 0.042" (1.1mm) cmc 05/23/02 ir/kh