adjustable ramps fit any vehicle! slideable ramps quickly adjust to tow almost any vehicle nylon straps and heavy-duty metal hook roadmaster smart diodes smart diodes tow bag rrrrrrrr everything you need to tow a car!" silicone and tow bag includes diodes to protect both vehicles' electrical systems roadmaster diode roadmaster smart diodes correctly modulate the voltage to activate only the intended circuit lub silicone rvituse capacity rating capacity rating lubricates and protects tow bar's working components makes towing safer by applying the trailer brakes before sway can get out hitch & tow catalog & internet only