26"-28" adjustable, aluminum, V-stays, with mounting material for the seat stays Incl. Atranvelo transport system, very stable e-bike rack, with stainless steel spring flap, with stainless steel mounting screws, aluminum die-cast feet, with pannier stop, improved center of gravity of luggage due to lower mounting of the pannier stay, with reflector holder, load capacity 27 kg + 3 kg battery, black, ISO 11243 Adapter system AVS Rear mounting Type Item Mounting seat stay E-bike type special Features Spring flap , Bag support Main color black Certification ISO 11243 suitable wheel sizes 26 " , 27.5 " , 28 " max. load capacity 30 kg