Home / Arms / 1RI-H639 BK Adjust.1RI-H639 BK Adjust. Category: Arms Description Spec Sheet DescriptionSpec Sheet: 1RI-H639 BK 80-96 Adjustable ArmRelated products Arms 1RI-096-BK 5D Adjustable Arm with In and Out Adjustment Arms 1RI-080-BK L+R Arms 1RI-H634 4D Adjust. Arms 1RI-587+PU Pad 4D Arm