Joebar
Contributor
If so, the whips you are familiar with aren't made according to standard.
You may read the standard EN 144-1
http://www.swiss-cave-diving.ch/PDF-dateien/Tauchen-Normung-EN144_V2.6_15042008.pdf
A very loooong german text, sorry
The interesting part is on page 62 the picture top left