Package includes one pair of Round Hole 340mm Aluminum and Solid Steel Shock Absorber Pressure can be adjusted by springs or air (nitrogen); Operation of the coil-over springs and air cylinder is helpful to reduce the shock. Shock Absorber bottom/ends type: Round End Universal Fit. Work perfectly on most 150cc~750cc street bikes, Scooters and Moped Quad (ATV) with shocks of 340mm eye to eye distance. (Please be noted, if your vehicle is too heavy, especially for ATV, please kindly check the Maximum load of the shocks before placing order. ) No instruction included, professional installation recommended. Color:Black and Silver, Round Shape Condition: Brand new/Never used Color: As picture show Material: Solid Steel+Aluminium Alloy Installation Type: Eye to Eye Fitment: Universal Fit. Work perfectly on most 150cc~750cc street bikes, Scooters and Moped Quad (ATV) with shocks of 340mm eye to eye distance. Great choice for replacement, style upgrading and all kinds of bike m