Petzl B16BAA Croll Ascender

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  • Petzl B16BAA Croll Ascender
  • Petzl B16BAA Croll Ascender
  • Petzl B16BAA Croll Ascender
  • Petzl B16BAA Croll Ascender
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Reinforced chest ascender for thin to medium-diameter ropes

Designed for rope ascents, the CROLL S chest ascender is lightweight and simple to use. The attachment holes ensure efficient positioning during ascents. The stainless steel wear plate improves durability by reinforcing the rope friction zone. It is compatible with ropes measuring 8 to 11 mm in diameter.


  • Efficient and easy to use during rope ascents:
    - used with the BASIC ascender or the ASCENSION handled ascender for rope ascents
    - lower hole is angled to keep the chest ascender flat
    - upper hole for attaching a TORSE shoulder strap to keep the ascender in position
    - catch is opened by pinching, for simple, quick manipulation
  • Reinforced for durability:
    - stainless steel wear plate for improved durability
    - stainless steel cam has better resistance to corrosion
  • Adapted for intensive caving:
    - compatible with ropes measuring 8 to 11 mm in diameter
    - lightweight, only 85 g
    - toothed cam with self-cleaning slot optimizes performance under any conditions (frozen or muddy ropes...)


  • Material(s): aluminum frame, stainless steel cam and wear plate, nylon safety catch
  • Weight: 85 g
  • Rope compatibility: 8 to 11 mm
  • Certification(s): CE EN 567, UIAA

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Warranty Information

3 year manufacturer
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4 Reviews

  • 5
    Durable. Dependable

    Posted by Lukas Eddy on 3rd Feb 2020

    The central component of my Frog system. Grip is excellent. Easy open, easy close. Great piece of gear.

  • 5
    Standard croll. No problems

    Posted by Ryan on 2nd May 2018

    Solid device for frog ascending.

  • 5
    Best Croll I've used

    Posted by DangoFett on 8th Apr 2016

    My 3rd ascender after many years of SRT caving. Love this new style--small, sturdy, light. I just put 110 feet of ascending thru this Croll and it performed like a champ!

  • 4
    good, but old stlye was a little bigger

    Posted by Dirk Bennett on 24th Feb 2016

    Old style was better, but this one works fine

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