APEX RV Breakaway Switch 12V 48 in Cable Trailer Braking System 
Trailer Brake away kit trailer electric safety switch cable
Looped end of Lanyard attaches to the towing vehicles
Zinc Plated mounting for rust proof. 
Bolt to mount the brake away switch is not included. 
Switch actives electric brakes if emergency cable is pulled out. 
Legally required on trailer with electric brakes by Federal DOT & most states.