Petzl - ASAP LOCK， Mobile Fall Arrester with Locking Function<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>PROTECTED: Constant fall protection and locks on the rope even if grabbed during the fall.</li><li>VERSATILE: Works on vertical or angled rope.</li><li>LOCKS UP: Integrated locking function allows the user to immobilize the device to reduce the length of a fall. In case of a strong wind， this function also prevents the rope from being blown upward.</li><li>EASY TO USE: Moves up or down the rope without any manual manipulation of the device.</li><li>MATERIAL: Made from aluminum， stainless steel， and nylon.</li></ul></div><img src="http://ecx.images-amazon.com/images/I/411WTEZZHKL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51RrB3qMLKL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51DoScD4qrL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/517VlC-mhSL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51RRQjcdzdL.jpg" noproxy>