Includes 3 sets of blue yellow and red springs which are rigid medium and soft respectively. Also included are four screws and two upper shock mounts to secure shock to shock tower or plate. Note that these are not oil filled. Although they work great without oil its recommended to fill them before use. To help ensure a fit please check measurements below. Measures 122mm long between center of fixing holes. Total length end to end 129mm. Diameter of tension nut excluding piggyback 18.89mm. To suit 3mm screws which are included. Travel 36mm.