1,material:100% nylon hook+aluminum core,velcro hair roller 2,width:50*60mm 3,passed the SGS,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,plastic hair roller are made by the plastic roll and Velcro hook,Or you can add the aluminum,which can become the beautiful ...