MT-COM-SEC (5810-01-043-4643) SC-D-446186 Left Mounting Plate, SC-D-446187 Right Mounting Plate and large mounting plate SC-D-691342. p/o KY-57. Item is the three parts shown in picture, 2 vertical plates with large hole and large horizontal plate, and hardware. I do not know how this goes together, but I got them as one item. 20 lbs shipping.
(C9P) Unused, with hardware.