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D17 C / REVERSO 4 Ultra-light multipurpose belay/rappel device with braking PETZL View larger
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PETZL REVERSO 4

This belay/rappel device is lightweight and easy to use. V-shaped friction channels, with asymmetrical side grooves, adapt the rope friction for better control (braking adapted to half, twin and single dynamic ropes). Reverso mode for belaying one or two seconds.

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Data sheet

Color hellgrau, violett, apfelgrün
Weight 59g
Info UIAA
Material hot forged aluminum body

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This belay/rappel device is lightweight and easy to use. V-shaped friction channels, with asymmetrical side grooves, adapt the rope friction for better control (braking adapted to half, twin and single dynamic ropes). Reverso mode for belaying one or two seconds.

  • Ultra-light design:
    - minimalist construction
    - hot-forged aluminum
    - weight: 59 g
  • A single device for all rope types:
    - effective braking on half and twin ropes (7.5 mm or greater diameter)
    - effective braking on single ropes (8.9 mm or greater diameter)
    - can belay the leader, one or two seconds and can be used for rappelling
    - independent and simultaneous belaying of two seconds in Reverso mode 
    - for swapping leads (team of 2), offers a quick transition from Reverso mode to belaying the leader
  • The V-shaped friction channels:
    - give greater braking power on thin ropes
    - adapt the braking power on larger diameter ropes
    - increase the braking pressure on the ropes in Reverso mode
  • The asymmetric side grooves:
    - increase the braking power for leader or top-rope falls, or while rappelling
    - improve rope glide through device when taking up slack 
  • Hole for releasing the device under load: allows a loaded device in Reverso mode to be easily and gradually released with only a carabiner
  • Rope friendly, facilitates rope maneuvers and rappelling:
    - will not twist the ropes regardless of the mode used
    - separates the two strands of rope when belaying and rappelling on two ropes
  • Intuitive use:
    - Reverso mode aluminum attachment hole is easy to identify
    - keeper cable keeps the device from moving up the rope when belaying and reduces risk of losing the device
    - usage diagrams (standard belay and Reverso modes) engraved on device
  • Use with symmetrical locking carabiners (Am’D or WILLIAM) to maximize efficiency

Product combinations

Model Color
D17 AG
D17 VI
D17 C

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