The Universal Ball Head Phone Holder from MOVMAX is a versatile ball head mount with a spring-loaded clamp that can securely hold any smartphone with width of 2.4 to 3.6 inches. Ball head positioning is quickly controlled by a single locking knob. The base features a 1/4"-20 thread four mounting on a MOVEMAX suction cup bracket or other mount. Two additional 1/4"-20 female mounts make it possible to expand and customize your rig.