1,material:100% nylon hook+aluminum core,velcro hair roller 2,width:32*60mm 3, ... ,ISO test 4,20-30 days delivery Velcro Aluminum Core Hair RollerWe can produce sponge hair roller,plastic hair ... strong adhesive quality ensures that is holds firmly to the surface.4) Any color, any size, can be made as ... other ways etc.Some people use hair roller on the set hair and fix the bangs , it is very beautiful6) ...