The RAM-B-149Z-A-UN7U consists of RAM-HOL-UN7BU + RAM-B-201U-A + RAM-B-231ZU. Included in this package is hardware that will accommodate rails from 1.27cm to 3.175cm in diameter. The base includes black cover caps to be placed over the exposed ends of the u-bolt. The included composite rail adapter can narrow the rail to a minimum width of 1.27cm. The mount is designed with a RAM B size 2.54cm diameter patented rubber ball and socket system that has adjustment points at both ends of the double socket arm; allowing for almost infinite adjustment and perfect viewing angles. The spring loaded X-Grip IV cradle expands and contracts, allowing for a perfect custom fit of your phone or phablet. 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.

U-Bolt Dimensions:
Accommodates rails from 1.27cm to 3.175cm in diameter

Cradle Dimensions:
Minimum Width = 4.76cm (Minimum Height = 10.79cm)
Maximum Width = 8.25cm (Minimum Height = 5.71cm)

Depth = 2.22cm

Material:
Powder Coated Marine Grade Aluminum, Marine Grade Stainless Steel Components and High Strength Composite

Ball Size:
B Size 2.54cm Rubber Ball

Note:
The "U" in the part number reflects product packaged in poly bag. RAM highly recommends using the provided Tether for all open cockpit applications while using this product.