Additional info that might be helpful:
[FONT=Arial, Helvetica, sans-serif]Sizes[/FONT]
[FONT=Arial, Helvetica, sans-serif]Curlformers come in a range to suit lengths of hair and desired style.[/FONT][FONT=Arial, Helvetica, sans-serif]
Short & Wide:[/FONT][FONT=Arial, Helvetica, sans-serif]
For typical curls on shorter hair.[/FONT][FONT=Arial, Helvetica, sans-serif]
Short & Narrow:[/FONT][FONT=Arial, Helvetica, sans-serif]
For ringlet curls on shorter hair.[/FONT][FONT=Arial, Helvetica, sans-serif]
Long & Wide:[/FONT][FONT=Arial, Helvetica, sans-serif]
For typical curls on up to shoulder length hair.[/FONT][FONT=Arial, Helvetica, sans-serif]
Long & Narrow:[/FONT][FONT=Arial, Helvetica, sans-serif]
For ringlet curls on up to shoulder length hair.[/FONT][FONT=Arial, Helvetica, sans-serif]
Long & Extra Wide:[/FONT][FONT=Arial, Helvetica, sans-serif]
For barrel curls on up to shoulder length hair.[/FONT][FONT=Arial, Helvetica, sans-serif]
Extra Long & Wide:[/FONT][FONT=Arial, Helvetica, sans-serif]
For typical curls on longer than shoulder length hair.[/FONT]
Taken from
http://curlformers.com/englishrotation.htm
I'm actually considering purchasing some. If so, it will be the EL&W to experiment on my sister.