Can this be used to tension a rope across a river for instance?

I believe it's pretty good at this but the Maestro from Petzl will be better if a little chunky. Just be aware of vector forces and the safe load the Rig is rated too. You may want to put it after a pulley system to reduce the loading on the device.

What diameter of rope do you use with this

Dear Alastair S., The PETZL Pro Rig Descender is compatible with ropes with a diameter between 10 and 11,5 mm.

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PETZL Pro rig bottom length 2018

Product ID: 82380480

Details

Brand
PETZL
Colour
Yellow
Fit type
Universal
Material
Aluminum Steel
Product care instructions
Hand Wash Only

🪢Compatible with 10-11.5mm ropes

⚖️400g ultra-lightweight

🧗‍♂️200kg max load capacity

Description

🧗‍♀️ Elevate your climb with gear that’s as serious as you are.

TRUSTED LEGACY - Backed by Petzl’s 50 years of innovation and industrial excellence.
ROPE COMPATIBILITY - Perfectly engineered for 10-11.5mm ropes.
FEATHERWEIGHT STRENGTH - At just 400g, carry less, climb more.
HEAVY DUTY RELIABILITY - Supports up to 200kg for ultimate safety.
UNIVERSAL FIT DURABILITY - Crafted from aluminum, steel, and polyamide for long-lasting performance.

The PETZL Pro rig bottom length 2018 is a lightweight (400g), heavy-duty climbing accessory designed for professional use. Compatible with ropes from 10 to 11.5mm and supporting up to 200kg, it combines premium materials and Petzl’s 50-year legacy of innovation and safety to deliver reliable performance for demanding climbs.

Specifications

ASIN	B0797HSW59
Age Range Description	18+ years
Apparel Fabric Stretch	No Stretch
Apparel Fabric Weight Class	Heavyweight
Best Sellers Rank	58,248 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) 9 in Belay & Rappel Equipment
Brand	PETZL
Brand Name	PETZL
Collection Name	All
Colour	Yellow
Customer Reviews	4.8 out of 5 stars 516 Reviews
Fabric Type	Stainless Steel
Fit Type	Universal
Fit type	Universal
Global Trade Identification Number	03342540821989
Included Components	See the description
Item Type Name	Accessory For Climbing
Item Weight	400 Grams
Manufacturer	Petzl
Material	Aluminum, Steel, Polyamide
Model Number	D021AA00
Part Number	D021AA00
Pattern	Solid
Product Care Instructions	Hand Wash Only
Product Warranty	Manufacturer
Product care instructions	Hand Wash Only
Size	One Size
Style	Single
Weight Capacity Maximum	200 Kilograms

Reviews

B**K

Very good

3.09.2025

A**X

A+++

Caving A++++

10.06.2020

F**X

Buen producto

Buen producto tao como se espera de el. Solo hay que tener en cuenta de que no tiene freno de seguridad ya especificado en el producto, ligero y manejable muy recomendado para trabajar con el como segundo descensor.

1.07.2025

C**N

Ottimo discensore

Ottimo discensore da lavoro, semplice, efficace, affidabile e relativamente economico rispetto a modelli più avanzati, certamente superiore ai classici modelli da lavoro più economici. Non adatto a principianti, perché non ha il sistema antipanico.

17.03.2025

M**F

Super!!!!

PETZL eben. Was soll man sagen: Lieferung und top Qualität. In siebzig Shows in siebzig Tagen ohne Probleme durchgehalten. Und auch im hundertsten Einsatz fürs Fernsehen immer noch Top. Sofort wieder

4.06.2024

C**A

Como había dicho petzel es lo mejor

Es una pieza única es muy buena eficas petzel siempre en la bancaria

30.09.2025

J**T

Accurate title

Arrived in perfect condition as described

13.10.2023

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