Retractable Transom Tie-Down Bracket – 80 DegreeRTB 80 Retractable Transom Tie-Down Optional 8 Degree Bracket. This Rod Saver Universal Mounting Bracket Kit is designed to convert most trailer’s existing mounting tabs to accommodate Rod Saver’s RT40 & RT50 Retractables. This 3 sided 80 degree bracket is ideal for tight fits and flatbed and box trailers and can be mounted with several different trailer configurations.