Home / Arms / 1RI-H634 4D Adjust.1RI-H634 4D Adjust. Category: Arms Description Spec Sheet DescriptionSpec Sheet: 1RI-H634 4D Adjustable ArmRelated products Arms 1RI-080-BK L+R Arms H-629 S2 PC Adjust. Arms H-637S S2 Adjust. Arms 1RI-587+PU Pad 4D Arm