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Petzl I'D S Descender (7/16" capacity) Petzl I'D S Descender (7/16" capacity) Petzl I'D S Descender (7/16" capacity) Petzl I'D S Descender (7/16" capacity) Petzl I'D L Descender (1/2" capacity) Petzl I'D L Descender (1/2" capacity) Petzl I'D L Descender (1/2" capacity) Example of I'D S in use with RADS Kit
Petzl I'D Descender image

Petzl I'D Descender

Petzl I'D Descender

Buy Petzl I'D Descender

Small - 7/16”
Large - 1/2”

The Petzl I'D is a self-braking descender and belay device for single rope. Moving the handle allows the rope to run, with the rate of descent being controlled by your the free hand. If the handle is released, the cam is engaged and stops descent. Anti-panic device automatically brakes if the handle is pulled too far. The button on the handle makes for easier movement on horizontal and low-angle terrain. Built-in safety catch reduces the risk of incorrect installation, and the safety gate on the moving side plate makes installing quick and easy, while reducing the chance of dropping the device. The cam shape on the Petzl I'D was specifically designed to improve rope glide, and it pivots to easily take up slack in the rope. Locking screw allows the I'D to be part of a rescue kit.

The I'D is a great choice for Yo-Yo or RADS (Rapid Ascent/Descent System) systems because it is easy even for beginners to operate safely. It also makes a terrific belay device attached to the anchor sling in an SRS anchor system, as it is easy for anyone to lower off the climber.

NOTE: The Petzl I'D L is designed for rescue and lacks the gated attachment hole found on the I'D S.

I'D S: Stocked in gold color. MBS of 14kN, max rope capacity 7/16".

I'D L: Stocked in red color. MBS of 22kN, max rope capacity 1/2".

Small ‑ ASC206, Large ‑ ASC207

This Item Ships free!* No-hassle Returns Ask A Question

Additional Features

  • Self-breaking safety features
  • Easy to install correctly
  • Does not twist rope
  • Handled device is easy to operate
  • Built-in anti-panic features
  • 3-year Manufacturer Guarantee
  • Individually tested
Manufacturer : Petzl
Made in : France
I'D S Max Rope Diameter : 7/16” / 11mm
I'D L Max Rope Diameter : 1/2” / 13mm
I'D S MBS : 14kN
I'D L MBS : 22kN
Material : Aluminum alloy, stainless steel, chrome-plated steel, and nylon grip
Dimensions : Approx. 9" x 3" x 2"
Weight : 530 grams / 18.7 oz.
  • Important Safety Information: When the device is not fully loaded, it is possible for other elements of the user's system (e.g. rope, Croll, etc.) to be positioned in such a way as to push on the safety catch and open the side plate. Always take care to prevent elements of your system and other objects from coming into contact with the safety catch.


  • CE EN 341 class A
  • CE EN 12841 type C
  • NFPA 1983 Technical Use
  • ANSI Z359.4

Petzl Technical Notices for Petzl I'D

ANSI Z133-2017

The American National Standards Institute (ANSI) has released the ANSI Z133 safety requirements which apply to arboriculutral operations.

The Petzl I'D is ANSI compliant.

The full ANSI Z133 safety requirements are available on our tree care standards page.

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