I remember these.
.....When the black dot turned red you were good to go.
Electric Curlers,Roller Set,Vintage Props,Paradise,Mirrors
Hot Rollers. I had to use two sets of them. :> )
2 tube Curling Iron Tapered Curling Wand Electric Curler hair salon professional Tourmaline Ceramic Pear Flower Cone hair roller
Electric Curlers Electric Curlers - Never Used Other
W501 Hot Sale 22-38 mm Professional Ionic Ceramic Coating Flexi Rods Waver Hair Curling Iron Electric Curler Styler Rollers Wand
RIWA 2 in 1 Straightener And Hair Curling Iron Z5 Scald Proof Design Electric Curler Hair Styling Tool 220V 50Hz
GE General Electric Instant #Hairsetter Hot Rollers Pageant Hair Electric Curlers #beauty
These were hot, hard, heavy and picky but we curled our hair with these for years.