Today we're going to review part number SS05110. This is the Steal Shield A-Frame Trailer Coupler Lock which is designed for A-frame style couplers. Basically this coupler lock will prevent theft of your trailer. What it does is this would slide over your coupler; the A-frame coupler and its a large visible shield which will fully enclose the coupler. It lets the thieves know that you do have a… see more >