RAM 1.5" Ball Mount with 2.5" Round Base & 2" x 4" Plate for the Humminbird Helix 7 ONLY Wheel and Tire 20-29" Heavily plated steel to resist

Heavily plated steel to resist corrosion

Coupler Lock Universal

Fits models 980

Ultimate Water Absorber is super soft

Cup holder mounts to 3/4-inch to 1-1/4-inch boat rails

RAM 1.5" Ball Mount with 2.5" Round Base & 2" x 4" Plate for the Humminbird Helix 7 ONLY Wheel and Tire 20-29" Heavily plated steel to resistThe RAM 202 24 202, powder coated marine grade aluminum mount, consists of a double socket arm mount, one round 2. 5" diameter round base with the universal AMPS hole pattern and one 2" x 4" rectangular base. Rubber ball, socket technology dampens shock and vibration, as well as allows for almost infinite adjustment, perfect viewing angles. Compatible Devices: Humminbird Helix 7Overall Length: 7. 35"Weight Capacity: Up to 10 lbs.