The UD system Climb Assist Pulley was designed for the Challenge Course industry, as a simple method of protecting users on thier way around a High Ropes/Challenge course. The UD system is also a protection solution for workers on towers, masts, Wind Turbines and even in constrution applications where a cost-effective, temporary climb assist solution is required for short duration working. In the event of a fall, the UD system Pulley locks on quickly to arrest the fall. As fall distances are extremely small, it is extremely unlikely that the user will be incapacitated. However if necessary, a resuce can be easily organised from ground level. The UD system has been field trialled and cycle tested by over 4000 users with no detriment to performance and with little or no wear. The UD system has been extensively drop tested, in line with both CE EN360 and ANSI Z359. The unit has also been tested with weights other than those required for CE and ANSI Standards and has been statically pulled to destruction- making it probably the safest Climb Assist product in the world.