Black 360 Degree Multi Angle Adjustable Rotation Car Wind Shield Mount GPS Mobile CellPhone Holder Suction Cup Diamiter: approx. 2 3/8" (6cm) Clamp adjustable range: 2"~3 1/8" (5~8cm) Material: High quality ABS Multi angles adjustment bracket arm with ball joint design Fixed on the windshield or any smooth, clean and flat surface, & removed easily