The FS is a metallic floor stand for the 3, 5, and 6 with a 1/4 to 20 in. thread mounting screw. This item is included with the 3R, 3 g, 5R, 5 g, 6R, 6 g kit and system configurations and is compatible with older generation 3, 4, and 5 products. This replacement accessory is shipped in a generic car