RAM Mount RAM X-Grip Phone Mount w/Grab Handle M6 Bolt Base [RAM-B-186-M6-UN7U]RAM X Grip Phone Mount with Grab Handle M6 Bolt Base The RAM X Grip Phone Mount with Grab Handle M6 Bolt Base (RAM B 186 M6 UN7U) is easily installed on any vehicle's grab handle that features an M6 threaded bolt. This solution includes a medium length double socket arm, the popular spring loaded RAM X Grip phone holder, and a RAM ball base. With a hollow center, users can feed the 6mm bolt or smaller to screw into a vehicle's grab handle for a stable