Stainless Steel, 2.5" x 13", (1) 1/8"NPT port. Select hangers option, 9.25" centers for some models like Heritage and Fat Boy, and 6.25" centers for other models like Deluxe and Slim. Check your fender strut bolt measurements closely to make sure you have either 9.25" centers or 6.25" centers and order accordingly. Single 1/8"NPT port on the back side