How It Works: BalZout brackets typically consist of 5 components: a base, two knuckle joints, a connecting arm and a mounting plate. Each joint has a positive locking ball and socket mechanism, get them tight and they won't budge! Each joint moves in 30 degree increments allowing you to position our mount to fit your needs. A spring pocket at each knob allows the joints to be moved when loosened, but keeps enough pressure to hold position for easy adjustment. Each stud is longer than the spring travel, so if a joint needs to be disconnected for any reason the knob won't be sprung into the water. How It's Made: -BalZout Mounts are made of only high quality, American made products. -Mount componets are made of CNC Machined aircraft grade aluminum. -Each componet is hard coat anodized. Red and Blue units are then powder coated. -The stainless steel studs are made in New York. -Knobs are made in Missouri. -Anodizing and Powder Coating are done by local finishing professionals. Important Dimensions: Round Base: 3.75" Diameter Unit Height: 4" unit: Up to 6.5" vertical (from deck to bottom of gimbal) or 6.5" horizontal (from center of base to center of gimbal) 6" unit: Up to 8.5" vertical (from deck to bottom of gimbal) or 8.5" horizontal (from center of base to center of gimbal) 9" unit: Up to 11.5" vertical (from deck to bottom of gimbal) or 11.5" horizontal (from center of base to center of gimbal) 12" unit: Up to 14.5" vertical (from deck to bottom of gimbal) or 14.5" horizontal (from center of base to center of gimbal) Standard Mounting Plate Application: Lowrance- HDS-7, HDS-8, HDS-9, HDS-10, HDS-12 (Does not fit Elite-7TI Touch) Hbird- 800 series, 900 series, 1100 series (Will not fit Onix and Ion series) Garmin- GPSMap 7”, 8”, 10”, 12”. echoMap- 7”, 9”.