HANDS-FREE TALKING! The perfect item to free hands to ensure your safety. The W009MA Cell Phone Holder is available in 3 sizes. Please select the size from the pulldown menu that is large enough to hold your cell phone with a protective case if one is used. Overall Height 3.5?. Includes SnapIt! System mounting arm that mounts under chair armrest. Select your chair from the drop-down menu. If you do not see your chair in the list contact us at 800-886-4926. UV Stabilized HDPE (High-Density Polyethylene) Stainless Steel Hardware