Ergonomic and simple to use, the RESCUCENDER is an openable, cam-loaded rope grab designed for use in haul systems or as a progress capture device. The integrated cam allows for a quick and fluid install or removal anywhere along the rope, and eliminates the need for a locking pin. To help prevent accidental opening or improper use, the device is equipped with independent safety catches on each side. This also allows for easy. The safety catches also feature red indicators that show when the device is unlocked. Works on ropes 9 - 13 mm. For more information visit https://www.petzl.com/US/en/Professional/Rope-clamps/RESCUCENDER