The Petzl Freino carabiner is a great tool for descenders. It comes with a friction spur that's perfect for adding or adjusting friction during descent. When rappelling or lowering on single ropes, it boosts friction without needing extra gear or opening the carabiner. It's super easy to use - you can quickly redirect the rope over the friction spur and remove it with just one hand. It features an auto-locking mechanism and a keylock system. It's suitable for use on single ropes with the STOP, GRIGRI, HUIT, HUIT ANTIBRULURE, and SIMPLE. Made of aluminum, it's certified with CE EN 362, CE EN 12275 type B, and UIAA. The gate opening for the friction spur is 12 mm, and it weighs 85 g. The locking system is TWIST-LOCK. It has a major axis strength of 25 kN, a minor axis strength of 10 kN, and an open gate strength of 9 kN. The gate opening is 15 mm.

Using the Petzl Freino carabiner is easy. When you're descending, you can quickly redirect the rope over the friction spur to add or adjust friction. You can do this with just one hand, which is really convenient. To ensure your safety, always make sure the carabiner is properly locked using the TWIST-LOCK system before use. When using it with single ropes, check that it's compatible with your descender like the STOP, GRIGRI, etc. Don't exceed the strength limits of the carabiner. The major axis strength is 25 kN, minor axis strength is 10 kN, and open gate strength is 9 kN. After each use, inspect the carabiner for any signs of damage. Keep it clean and dry. If it gets dirty, you can use a mild soap and water to clean it, then dry it thoroughly. Store it in a cool, dry place away from direct sunlight and harsh chemicals.