The YakAttack RotoGrip Phone Holder is exactly the phone holder you would expect from YakAttack. Its revolutionary design is unlike anything that exists on the market and utilizes their popular RotoGrip technology allowing for quick one-handed operation. The phone holder features two adjustable rubber wheels that securely holds most modern-day smartphones and the width settings can easily be adjusted. Compatible with smartphones ranging from: 2.75"to 3.625"wide, 0.303"to 0.625"in thickness.This version of the RotoGrip Phone Holder includes the phone holder with no base mount or double socket connector and their Universal Smartphone Harness and Tether. The 1"ball on the back of the phone holder frame is compatible with popular 1"ball mounts from brands such as YakAttack, Ram Mounts, Scotty Fishing Products, and more.Built into the phone holder is their 1"ball system that allows for easy articulation to achieve a wide variety of positions. The 1"ball mount on the back of the phone hol...