We have been developing fitness mount gym phone holder for 15 years,C clamp style quick release bar mount with magnetic phone holder can can be installed and take away by one hand,strap magnetic stroller mount easily mounted to 16-38mm thin thicker tube. Wrist Strap and Armband phone holder are suitable for running and football referee's live commentary on the game. All magnetic gym phone holder rotates 360 degree and easy to remove for calling while running or exericising. We use real N52 magnets for strong enough magnetic suction, which can attract mobile phones and tablets. All magnetic phone holder accessories come with iron pieces inside, so all Samsung, Huawei, and Apple phones can be used!