The only automatically locking belay device which has a completely panic-proof locking mechanism. The REVO has no method of over-riding the locking mechanism, during belaying, or when lowering a climber. It's bi-directional, and the locking function works regardless of the rope direction. It has an intuitive belaying method, which requires no changes to standard belaying technique. There's no need for a specific locking karabiner. All of these USP's contribute to make the REVO the safest belay device available. Features: - Panic-proof locking mechanism - Bi-directional design - Weight: 245g - Rope range: EN 892: 1998 TYPE A 8.5-11.0mm - EN Standard: EN 15151-1