All Hydro Tek electric brake trailers come with a 7-prong plug, ready for a brake controller. Additionally starting the beginning of 2011, all tandem axle electric brake trailers were updated to include electric brakes on both axles. When purchasing any trailer, be sure to check with your local Department of Transportation or Highway Safety for brake requirements which differ from commercial to personal use trailers. See all our Pressure Washer Trailers by clicking this link.