4 articulating metal arms with 6 rubber finger tips hold the device firmly and securely Fits most devices (with or without case) with a minimum size of 1-7/8ö - 3-7/8ö width and 7/8ö depth Secure tether fits most devices up to 6-3/4ö diagonal (including case) 360? rotation ball and adjustable bracket design Mounts on any round handlebar from 1/2ö to 1-1/2ö in diameter High-strength compositeÆs and steel construction with powder-coated marine-grade aluminum. HEX-GRIP HANDLE BAR PHONE MOUNT