There are holders, and then there's the Grip-On Mounting System from On-Stage! It's the fast and easy way to mount your mobile device to everyday objects and surfaces. The u-mount is the ideal balance of ease and hands-free convenience. Once you try the Grip-On u-mount holder, you'll want to use your mobile device everywhere! Includes 4 Grip-On Holders: Small holder grips: 2.5" to 3.5" Medium holder grips: 3.5" to 5.75" Large holder grips: 5.75" to 7.75" Largest Grip-On holder for devices 7"-9" wide Includes 360-degree ball joint with pull back release: 360 degree rotation, 30 degree tilt 3 drop down slots allow 90 degree tilt for more flexibility 8mm threaded stem and locking washer mate with u-mount boss Attaches/releases 360 degree Ball Joint assembly from the Mounting Post Locks in any of three rotational angles at the best starting position for your application Includes Mounting Post: Collar engages the quick release Pull Back Release Sleeve Post slides into hole in the Mounting Bar 5/8"-27 threading compatible with optional accessories Includes Presentation Grip: Soft EVA grip slides over mounting post Comfortable handle for mobile use Includes Mounting Bar: Patent-pending u-mount clamp secures to any round surface from 7/16 to 3/4 in diameter Attaches to mic stands, drum hardware, car headrests, rec chairs and much more