Petzl CROLL Chest Ascender. B16AAA. $59.95. Ventral rope clamp.

-Used with the ASCENSION rope clamp for ascending a rope
-Toothed cam with self-cleaning slot optimizes performance under any conditions (e.g. frozen or dirty ropes)
-Mechanism is totally integrated into the body of the rope clamp to help prevent rubbing
-Thumb catch can be pinched for easy manipulation when the clamp is in position
-Angled attachment hole allows the device to lie flat against the chest
Used in conjunction with the SECUR shoulder strap keeps the ascender in position

For single ropes between 8 and 13 mm in diameter.

Weight: 130 g

Individually tested

CE EN 567, CE EN 12841 type B