The RAM-B-149Z-UN4U consists of a zinc coated u-bolt base, double socket arm and universal Finger Grip&trade cradle The mount is designed with a RAM 1" diameter patented rubber ball and socket system that has adjustment points at both ends of the double socket arm; this allowing for almost infinite adjustment and perfect viewing angles. The RAM Composite Universal Finger Grip&trade   cradle is designed to hold a large amount of cell phones and electronic devices. The cradle comes with (3 sets) of four flexible rubber coated fingers placed along sides to grip your device. The fingers open by squeezing the ends to open the small finger arms. The bottom of the cradle includes a back plate that adds support to the device being held by the mount. The spine plate contains the universal AMPs and 1.5" x 2" hole patterns. 

U-Bolt Dimensions:
0.50" to 1.25"

Height Dimensions:
Minimum with Top and Bottom Plates: 5.25"
Maximum with Top and Bottom Plates: 6.0"
The top and bottom plates can be removed for larger devices.

Spine Plate Dimensions: 
3" Width x 3" Height

Using Short Arm Side Clamps:
Maximum Depth: 0.75"
Minimum Width: 1.25"
Maximum Width: 3.0"

Using Medium Arm Side Clamps:
Maximum Depth: 1.25"
Minimum Width: 1.5"
Maximum Width: 3.5"

Using Long Arm Side Clamps:
Maximum Depth: 1.6"
Minimum Width: 2.25"
Maximum Width: 3.5" 

Material: 
High Strength Composite and Powder Coated Marine Grade Aluminum 

Ball Size: 
1" Rubber Ball "B" Size 

Note: 
The "U" in the part number reflects product packaged in poly bag.