National Products RAM Mounts Track Ball Mounting Adapter for Receiver, Cell Phone, Camera, Tablet RAP-B-304U-TRA1

The RAP-B-304U-TRA1 consists of a drill-down receiver base that can hard mount to any flat surface, with a 1" Track Ball™ that can slide and tighten into the receiver. Create an incredibly low-profile track mounting platform where the double ball mount can quickly disconnect when not in use. Ideal for mounting small handheld electronics such as phones, cameras or small tablets.