The Serfas® PH-1 Bicycle Phone Holder fits mobile devices with screens 4.7 to 5.5 inches in size and is made of soft silicone that won’t scratch your device. The injection molded Nylon mount attaches easily to any size bicycle handlebars with a secure strap and single-nut adjustment system. Rotating the mount will lock at every 90 degree rotation for vertical or horizontal screen viewing.