Simply choose the base mounting hardware and the possibilities become endless with a RAM flat surface mount. Four mounting holes in the round ball base easily accommodate up to a #10 screw. Rubber ball and socket technology allows for almost infinite adjustment and perfect viewing angles. High quality materials insure your device is safe, secure, and within easy reach. RAM’s patented design also dampens shock and vibration helping to extend the life of your mobile device. Universal Finger Grip™ Holder Description: The RAM Composite Universal Finger Grip™ Holder is designed to hold a large amount of cell phones and electronic devices. The holder 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 holder includes a back plate that adds support to the device being held by the mount. This mount is designed to hold the following devices: Cell Phones 2-Way Radios GPS DevicesHeight 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: 2.5W x 5.0H”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 Note: Part number reflects product packaged in clear clam shell for store shelf display. Related Links:RAM Universal Finger Grip™ PageUniversal Finger Grip Installation Instructions.