Post Mount Flexible Arms Top Post Mount Adapter Kit, White Use w/ 8733 & 8734 post-mount flexible arm Easy conversion from thru post to top post mount Flexible counterbalanced arm w/ pneumatic brake 50" Over-the-Patient Style 34" Side Delivery Style Built in tension adjustment mechanism Vertical travel is 23" Rigid arm is 26" on the 50" arm, & 11" on the 34" arm Mounts on 2" diameter post or wall-mount brackets 8647 & 8349 Easy conversion from thru post to top post mount