Petzl Knee Ascent Foot Loop Flipline & Lanyard Adjusters the TANDEM has aluminum sheaves

the TANDEM has aluminum sheaves mounted on self-lubricating bushings for efficiency

and is non-invasive because setting it up does not involve drilling into a tree

Weight: 75 g

limits flipping and keeps it integrated with the device or lanyard

Reduces risk of accidental opening

Petzl Knee Ascent Foot Loop Flipline & Lanyard Adjusters the TANDEM has aluminum sheavesKnee ascender assembly with foot loop to facilitate ascents on a single rope, for tree care The KNEE ASCENT LOOP assembly facilitates the arborist's ascent when using the ZIGZAG or ZIGZAG PLUS mechanical Prusik on a single rope. It contains an upper strap, a CROLL L rope clamp, a lower strap with foot loop and an XS size TOOLBAG tool pouch. The system is entirely adjustable and adapts to all shapes and sizes. Benefits Facilitates ascents on a single