Handles a much wider range of rope diameters than other similar device If the release handle is pulled too hard, the unit locks The unit only lowers if the handle is kept in a mid-range position The unit is approximately the same size as a PDA. Details: The Lory has two subtypes this subtype, the Anthron Lory Safe, features unimpeded movement of the cam, making it suitable for industrial applications. By pulling the handle, the cam gradually releases the rope. If the handle is pulled down to its terminal position, the double-stop function is triggered, which blocks the rope again. To resume descending, return the handle to closed position and restart the process.