Sepnine Single Wheel Bike Cargo Trailer Aluminium Frame 8002T Reinforced Alloy frame with a maximum 55 lbs capacity Attaches to rear quick release axles only on most 20" to 28" bikes Cargo storage bag with carrying handles measures 23.62"L x 13.78"W x 11.024"H Only has one wheel, connects directly to back tire of bike Includes safety reflectors, orange safety flag, and rear wheel fender