Topeak modula adjustable bottle cage 2innovative diameter adjustment system makes adapting the modula cage from traditional cycling water bottle sizes to store bought bottled water containers quick and simple just push a button and slide to fit constructed of engineering grade plastic and aluminium featuresmaterial aluminium engineering grade plasticsize l x w x h 86 x 76 x 158cm3 4 x 30 x 62weight 72g2 53oz buy topeak accessories from chain reaction cycles the worlds large