This is the traditional plastic hair curler , outside with nylon velco tape , inner core was made of plastic core . This is the traditional plastic hair curler , outside with nylon velco tape , inner core was made of plastic core . Available sizes: 13mm, 15mm, 20mm, 25mm, 32mm, 36mm, 40mm, 44mm, 48mm, 51mm, 56mm, 61mm, 70mm, 78mm .Using way:1. Spray certain amount of water to the hair make it ...