This Trail-a-mate Hydraulic Jockey Wheel converts to a hydraulic jack and levelling device. It is for use on all types of trailers, especially caravans.
Features fuse protection, L.E.D battery indicators, illuminated (green) accessory socket rings and a 1m spiral lead. The USB port is commonly used for electronic items such as MP3 players, digital cameras, GPS etc.
Amperage rating 8A for use at 12V only