RAM Mount X-Grip Phone Mount w/Motorcycle Brake/Clutch Reservoir Base [RAM-B-174-A-UN7U]X Grip Phone Mount with Motorcycle Brake Clutch Reservoir Base The RAM B 174 A UN7 consists of hardware for mounting to either brake clutch reservoirs and rails that are 0. 5" to 1. 25" in diameter, short length double socket arm and universal X Grip cell phone cradle. Designed into the mount is a 1" diameter patented rubber ball and socket system with adjustment points at both ends of the socket arm; this with a twist of the arm knob, allows you to