You can use the Petzl Mini Traxion Pulley
for hauling on a multi-pitch climb, as a standard pulley, or for ascending a fixed rope thanks to it's unique locking design. The cam on the Mini Traxion Pulley allows you to pull rope through smoothly but prevents the rope from sliding in the opposite direction. It can also be locked open when you need a free pulley. Bring this 5.8-ounce self-locking pulley on a long trad route to haul your pack, or use it for crevasse rescue on your next mountaineering trip.
Strength: [Working load] 5kN (1124lbf); [Breaking strength] 20kN (4496lbf)
Weight: 5.8oz (165g)
Recommended Use: Big wall climbing, aid climbing, glacier travel, trad climbing
Warranty: 3 Years