Check the listing for details. RAM-SG-D-111U RAM Pin-Lock Marine Electronic Mount with Gim.... Color: Black, Condition: New. Listed at 184.99 USD. RAM Pin-Lock Marine Electronic Mount with Gim... RAM-SG-D-111U Genuine RAM Products! The RAM-SG-D-111U consists of a 3.68 INCHES diameter round base, STANDARD LENGTH double socket arm, 11 INCHES x 3 INCHES rectangular base, RAM mixed combination Pin-Lock security nut/knob and key knob for Gimbal Brackets. The round base contains pre-drilled holes, including two holes at 180 degrees and three holes at 120 degrees. The rectangle base contains different combinations of pre-drilled holes which will match up to many electronic devices and mounts.hardware included (2) RAM Pin-Lock Security Keys(4) .312 INCHES x .187 INCHES Shoulder Washersproduct dimensions Overall Height: 11.5 INCHES socket to socket length 6.88 INCHES hole pattern See Drawingsplate size Top Plate: 3 INCHES x 11 INCHES Bottom Plate: 3.68 INCHES Diameterball size D Size (2.25 INCHES )weight capacity Standard Use: 6 lbsHeavy-Duty Use: 5 lbsmaterials Marine-grade aluminumpackaging type Poly BagWeight 4.47 lb Additional Information The 11 INCHES x 3 INCHES 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. hardware included (2) RAM Pin-Lock Security Keys(4) .312 INCHES x .187 INCHES Shoulder Washers product dimensions Overall Height: 11.5 INCHES socket to socket length 6.88 INCHES hole pattern See Drawings plate size Top Plate: 3 INCHES x 11 INCHES Bottom Plate: 3.68 INCHES Diameter ball size D Size (2.25 INCHES ) weight capacity Standard Use: 6 lbsHeavy-Duty Use: 5 lbs materials Marine-grade aluminum packaging type Poly Bag Weight 4.47 lb