Petzl B17A_A Ascension

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B17A A
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Handled rope clamp for rope ascents, the ASCENSION features an overmolded grip and ergonomic upper part for a comfortable and powerful grip with one or two hands.  The ASCENSION handled rope clamp has a wide lower hole for easily attaching two carabiners for a lanyard and footloop.


  • Simple to use, and effective
  • Ergonomic molded handle allows a comfortable, yet powerful grip
  • Wide opening allows the handle to be easily grasped, even with thick gloves
  • Ergonomic upper part to maximize power when pulling with two hands
  • Safety catch is totally integrated into the body of the rope clamp to help prevent snagging
  • Toothed cam with self-cleaning slot optimizes performance under any conditions (frozen or dirty ropes)
  • Wide lower hole allows the carabiners of the PROGRESS lanyard and FOOTAPE or FOOTCORD footloop to be easily attached
  • Upper hole for clipping a carabiner around the rope
  • Rope compatibility:  8 mm to 13 mm
  • Certifications:  CE EN 567; CE EN 12841 type B; NFPA 1983 Technical Use
  • Weight:  165 g
  • Country of manufacture:  FR
  • Manufactures 3-year guarantee
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2 Reviews

  • 5
    Durable. Dependable

    Posted by Lukas Eddy on 3rd Feb 2020

    The standard in hand ascenders. I use this as my upper ascender for my Frog system for caving and canyoneering. Grip is flawless. Used on many different ropes. No problems.

  • 5

    Posted by Marcos m carrillo on 3rd May 2016

    It's a great tool with safety feature just what i need it for my job

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