Pads and Armrests parts designed to customize the fit, angle of armrests, and comfort of Profile Design Aerobars. This pair of Ergo Injected Armrestscomfortably cup the forearms providing good support. The bolt pattern yields 48 possible configurations just by moving the armrest. The Ergo is compatible with all current aerobars and earlier models that used the F-19, F-22, F-35 or F-40 armrests.