It's skinny! Learning how to rappel on such thin lines is a science... and an art. Beal backup broke at ~7kN 8to8 and desheathed at ~3kN. It has aramid fibers so it's grippier than some skinny accessory cords.
Beal Backup Line https://hownot2.com/products/back-up-line
Petzl PurLine https://hownot2.com/products/pur-line
Petzl RadLine https://hownot2.com/products/rad-line-cord-6mm
Sterling Powercord https://hownot2.com/products/5-9mm-powercord
Sterling V-TX https://hownot2.com/products/5-4mm-v-tx-cord
Ghosting Video
https://youtu.be/WDWMObPOKHk
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