Weight Stack Adapter Plates- 2.5lb Pair Two 2.5 lb adapter plates for home gym with weight stack machine. As long as 2 guide rods are 5" apart from center to center. 3 guide barrell has 1" space in between on top plate. Works with most Marcy, Body Craft, Body Solid, Multi Sports, Master fitness ETC 90% of home gym with weight stack system. Ships to all 50 States, APO, FPO, and P.O. Box