Product Description The RAM-D-111U consists of a medium double socket arm, 3.68" diameter round base, and 11" x 3" rectangle base. The round base includes a 2.25" D size rubber ball and contains pre-drilled holes, including the universal AMPS hole pattern. The rectangle base also includes a 2.25" D size rubber ball and contains a variety of pre-drilled holes that are compatible with several large marine electronic devices, including fishfinders and chartplotters. Technical Specifications Part Number RAM-D-111U Hardware Included (4) .312" x .187" Shoulder Washers Product Dimensions Overall Height: 11.5" Socket-to-Socket Length 6.88" Plate Size Top Plate: 3" x 11", Bottom Plate: 3.68" Diameter Ball Size D Size (2.25") Weight Capacity Standard Use: 6 lbs, Heavy-Duty Use: 5 lbs Materials Marine-grade aluminum Packaging Type Poly Bag Weight 4.47 lbs. Additional Information The 11" x 3" 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. FISHFINDER RAM MOUNTS BOATING MOUNTS Out on the water, we know that the ideal experience requires having the versatility to confidently place and adjust your expensive fishfinders and other devices to any position while maintaining the structure of the mount out on harsh waters. DOUBLE BALL MOUNTS FEATURES Ball and socket technology allows for near-infinite adjustability while providing the holding power to support heavy devices in the harshest environments. Simply attach the ball adapter to your device and connect with the correct size socket arm to place on to the mounting base in the location of your choosing. RAM Universal Marine Electronic Mount RAM Universal Marine Electronic Mount RAM Drill-Down Marine Electronic Mount RAM Large Marine Electronics Mount RAM Large Marine Electronics Mount Buying Options Add to Cart Add to Cart Add to Cart Add to Cart Customer Reviews 4.4 out of 5 stars 252 4.7 out of 5 stars 1,015 4.7 out of 5 stars 1,267 4.7 out of 5 stars 258 4.6 out of 5 stars 682 Price — no data $65.49$65.49 $67.99$67.99 $169.00$169.00 $155.49$155.49 Height 7.3125" 5.225" 7.35" 11.5" 8.125" Ball Size B Size (1") C Size (1.5") C Size (1.5") D Size (2.25") D Size (2.25") Marine-Grade Aluminum ✓ ✓ ✓ ✓ ✓ Weight Capacity 2 lbs 4 lbs 4 lbs 6 lbs 6 lbs RAM Drill-Down Double Ball Mount for Humminbird Helix 5 RAM Drill-Down Double Ball Mount for Humminbird Helix 7 RAM Drill-Down Double Ball Mount for Humminbird Helix 8, 9, 10 & 12 RAM Composite Double Ball Mount for Lowrance Elite-4 & Mark-4 Series Add to Cart Add to Cart Add to Cart Buying Options Customer Reviews 4.7 out of 5 stars 742 4.7 out of 5 stars 1,225 4.7 out of 5 stars 367 4.4 out of 5 stars 199 Price $62.48$62.48 $70.99$70.99 $136.49$136.49 — no data Heght Medium Length Medium Length Short Length Medium Length Ball Size C Size (1.5") C Size (1.5") D Size (2.25") B Size (1") Powder-Coated, Marine-Grade Aluminum ✓ ✓ ✓ Base 1" x 2.5" Rectangle Base 1.5" x 3.5" Rectangle Base 1.5" x 4.5" Rectangle Base 2.5" diameter High-Strength Composite no data no data no data ✓