The strings of cyberplastic are available per string. A string is one meter long. This is the total length per string.
For the knotting in your hairfall you can knot the string in the middle which gives you two strings of 50 cm.
Thickness per string cyberplastic is 2 mm.
Attention: If your order a couple of strings you'll receive strings of a meter. So it's not a non stop length you can order.