PETZL Fixe Pulley INTENDED USE: The FIXE pulley is designed for hauling systems and deviations. CONSTRUCTION: The 21 mm sheave is mounted on self-lubricating bushings for efficiency. EASY TO USE: The FIXE's fixed side plates allow for quick installation and coupling with a rope clamp. LIGHTWEIGHT: This compact, aluminum pulley weighs only 90 grams. DETAILS: The FIXE pulley has a working load of 5 kN (2.5 kN on one rope strand) and a breaking strength of 23 kN. It's compatible with ropes 7 to 13 mm in diameter.