The HAS Auto controlled descent device range is designed for the fall protection of persons working at height,where a third party rescue is not possible or an escape rescue becomes necessary (danger due to xpansion). During normal use the use can move freely the working area without having to work against a break resistance. In case of a fall,the user is safely descended at a controlled speed Features Nominal Load 136 Kg Proof load 170 kg Static proof load 20 kN Maximum Decent speed 0.5 M/s Tested for 1 person Aluminum Housing Steel Rope Dia 4.8 mm Descender with freewheel EN 341: 2011 1 (C)