RAM Pin-Lock Universal Marine Electronic Mount (RAM-S-111U) (sku 54464)The RAM S 111U consists of a 2. 5" diameter round base, STANDARD LENGTH double socket arm, 6. 25" x 2" rectangle base, RAM mixed combination Pin Lock security nut and key knob. The 6. 25" x 2" rectangle base is a universal mounting bracket with a selection of mounting hole locations. In certain applications additional holes may need to be drilled for proper fit with your electronic device. Overall Height: 7. 35"Weight Capacity: Up to 4 lbs. HARDWARE