Heavy Duty Flipdown Abductor Hardware has a height adjustable stem that allows a good fit against the seat, reducing the gap between the abductor pad and the seat. An interface plate allows for forward/backward adjustment, side-to-side adjustment, and pad angle adjustment for an individual in the windswept position. Push button release. There are three sizes of flipdown hardware available, you choose depending on how thick the seat is. -Hardware For 1-5/8″ to 3″ Seat Thickness -Hardware For 3″ to 4-1/4″ Seat Thickness -Hardware For 4″ to 5-1/2″ Seat Thickness