Today we're going to be taking a look at the Master Lock Fifth Wheel Trailer King Pin Lock, Part Number 2999DAT. Nefarious characters beware, this heavy duty king pin lock prevents you from hooking up to an unauthorized trailer. It's made out of a durable powder coated steel, so it's going to be corrosion resistant, and difficult to defeat. The chrome plated pin features a deadbolt style lock with… see more >