Ball Mount Extension Arm, Black Color Aluminum Alloy 17mm to Connector Rod with Center Knob for Daily Phone Holder Setups

Single Arm For Mount Upgrades: Includes a single connector arm for replacement or upgrade needs, fitting supported 17mm mount systems used on device holder setups Aluminum Alloy Build: Uses a metal body with two ball ends for everyday mounting use, giving a practical connector arm for repeated setup changes and travel prep 17mm To 17mm Fit: Joins two 17mm ball mount points with a direct mechanical bridge, helping a worn connector or extend a stable holder setup Center Knob Control: Tightens from the middle knob to clamp both ball ends in place, making it easier to adjust viewing position before securing your holder setup 11.3cm / 4.45inch: Adds practical extension length between mounting points, useful when a phone holder or camera mount needs more placement flexibility