Petzl Mini-Traxion - A new concept in pulleys with an anti-return feature. The Mini Traxion can be used for sack-hauling, but it can also be used for the attachment of a person. You will appreciate it for setting up hauling systems, for back-up belaying and for moving along a tyrolean traverse, where the cam operates as an anti-return device. The Mini Traxion: a precious and effective secret weapon!