1,material:100% nylon hook+aluminum core,velcro hair roller 2,width:32*60mm ... ,ISO test 4,20-30 days delivery Velcro Aluminum Core Hair RollerWe can produce sponge hair roller,plastic ... hair roller and aluminum hair roller,velcro hair roller,magic hair roller, ... s attribute1) it is made of 100% nylon + aluminum core2) Speicfication(Width): 25mm,30mm,36mm,40mm,46mm,50mm ...