The RAM-B-174-UN7U consists of hardware for mounting to either brake/clutch reservoirs and rails that are 1.27cm (0.5") to 3.18cm (1.25") in diameter, double socket arm and universal X-Grip^® cell phone cradle. Designed into the mount is a 2.54cm (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 move the X-Grip^® mount to your optimum viewing position. The mounting hardware for brake/clutch reservoirs include both standard and metric mounting bolts. The included X-Grip^® cradle has a clean and clever four leg design that sports great holding power without hiding your phone behind foam pads and plastic. The spring loaded X-Grip^® cradle expands and contracts, allowing for a perfect custom fit of your cell phone. The perfect complement to the modern sleek interior of today's vehicles, the RAM X-Grip^® is the cell phone cradle evolved. The X-Grip^® includes a device tether recommended for outdoor applications. The cradle is compatible with handheld devices that will fit the dimensions listed below. It is important to verify the dimensions of your handheld device with a case/sleeve/skin when determining the overall size.