The Petzl ASAP stops a fall, slide or uncontrolled descent. It Locks even if the device is grabbed during a fall. The ASAP works on vertical or angled rope. It moves along the rope without manual intervention (downwards and upwards) and it is extremely easy to install and remove at any point on the rope. The Petzl ASAP meets OSHA requirements in North America. Certified to CE EN 353 2.