Needed this to go through about 250 feet of cable tray high above a caged secure tool crib. No way to get a scissor lift underneath. Worked great with a little help from some cardboard taped to the end. Had to do this to help the tip cross the rungs. Note that this size would only go for a about 30 feet or so before binding up on itself. We had an articulating boom lift to continue the run at each of these points. Also used this to go through and pull back an armored fiber cable in about 300 feet of conduit. Could not have completed this task without this. Be sure to use the included hand break, otherwise the unit will uncoil itself and create a big mess. That hand break is a great feature if you don't have the extra man power to monitor this as it unreels itself. Well worth the price. Arrived quickly and was well packaged.