Pulliam Enterprises Inc. taken the hitch plate, rocker arm and crossmember, and combined all three functions into our SuperLite King Pin Adapter. The adapter clamps to the trailer’s king pin and mounts an upside-down ball in place of all three. Then they took a gooseneck coupler, and turned it upside-down and mounted it to a base that fits industry standard rails or PullRite’s totally removable SuperRails featuring Clean Bed Technology (CBT).