Aleratec Universal Bike Mount Holder For iPhone, Samsung Galaxy, and Smartphones ADJUSTABLE BIKE MOUNT HOLDER: Fits Motorcycle and Bicylce Handle bars from 3/4" to 1 1/2". Compatible with all styles of handlebars MULTIPLE DEVICE COMPATIBLE BIKE MOUNT: Compatible with most mobile phone, smartphones, MP3 players and PDAs with or without a bumper or case VERSATILE BIKE MOUNT HOLDER: Heavy duty design easily installs on any bicycle handlebar without using any tools