Amzer AMZ95646 Bicycle Bike Handlebar Mount Holder for Samsung Galaxy S3 I9300 - Retail Packaging - Black Easy to install, simply clamp and tighten the mount ring onto your handlebars and Stem The 360 degrees swiveling head rotates the custom fit cradle for Horizontal and Vertical Viewing Swiveling base with locking ring - enables the holder to be positioned and locked into place Includes bicycle/ handlebar mount and Custom fit cradle. Includes 2 rubber pads for an enhanced grip Suitable for handlebars between 0.75 inches to 1.125 inch in diameter