Rokform [Galaxy S8] Sport Series Bike mount & Rugged Phone case, easy to use secure quad tab, twist lock mount/holder KEEPS YOUR PHONE SECURE: Patented Twist Lock system & Roksafe magnetic technology to keep your phone safe over even the roughest roads and trails ACCESS YOUR PHONE BUT KEEP IT OUT OF THE WAY: Listen to tunes, screen texts & calls, and use your GPS with ease NO TOOLS REQUIRED: Easy adjustment 7/8 to 1 1/8 handlebars or any round bar. Install, remove and adjust in seconds without tools. Great for moms and dads with strollers too KIT INCLUDES: Rokform Rugged Protective case case, Lanyard and Universal Bike/Bar mount USED BY CHAMPION CYCLISTS: Used and endorsed by pros like Johnny OMara-a Motocross/Super cross Champion and master Cross Country Mountain Biking champion