Petzl Pro Traxion Pulley - $100.93

This useful tool combines a pulley with an integrated cam which allows the rope to move through the pulley without slipping backwards. Self-jamming pulley is ideal for hauling systems and can be especially useful for work and rescue applications. Constructed with lightweight yet incredibly durable aluminum--this device weighs only 265g and can support a working load of 4.0kN. The moving sidepiece with push-button locking makes it easy to install or remove a rope while the pulley is fixed to an anchor. Built with a sealed ball-bearing and a 1.5" diameter sheave for smooth and efficient hauling. Truly a multi-functional secret weapon--the Pro Traxion is great for Tyrolean traverses where a smooth bearing and anti-return function are required. - $100.93