Made of nickel-plated metal, anti-rust with smooth surface;Featured with strong metal spring,can secure rollers in hair.The metal bottom of the hair clips is thin but strong, and their head shapes are good for sectioning precision area of scalp.Secure all hair in clips, and give enough time for hair to dry and style; Then remove each clip and gently comb through pin curls with a styling comb to achieve a glamorous look.