Therafin-34060-Abductor, Removable, Bracket OnlyThis removable abductor bracket is designed to be removed simply by pulling the knob to release the unit and pulling the unit out of the bracket. The depth adjustments of the receiver bracket are in 1 2" increments. The included pad bracket is adjustable and accomodates a minimum height of 1 7 8" and maximum of 5" (from bottom of the seat). The receiver bracket is black anodized aluminum and the brackets are powder coated stainless steel for