CT1500 Camper Trolley 

For single axle boat trailers, caravans, etc. weighing up to 1700 kg.
www.campertrolley.com.au/
The Camper-Trolley CT1500 ensures hassle-free, safe manoeuvring and positioning of your caravan, boat, or trailer into tight spaces.
Comes supplied with an attachment bracket. Simply attach the bracket, connect your Camper-Trolley, and using your handheld remote control, start effortlessly positioning your boat or caravan.
Camper-Trolley is a revolutionary hi-tech product manufactured according to the most modern design principles combined with cutting edge technology.