Not worth trying
I am EXTREMELY dissatisfied with this hot curler set and have returned it. It is very poorly designed: the curlers don't fit well the heating pegs, but rattle and fall off if even slightly bumped; the lid doesn't stay on; the clips are hard to get onto the curlers; the directions say to preheat for 15 minutes, then leave the curlers in for 15-30 minutes (which defeats the purpose of using hot curlers in the first place!); the "cool touch" ends are neither cool enough to touch nor easy to handle; the curler clips left bumps in my hair that lasted longer than the curl; the cord wraps around the base but doesn't fasten, so it keeps coming unwrapped if you move it. Forget it!