"The Johnny Ray JR-208 Heavy Duty Swivel Mount for Humminbird HELIX 9-12 or SOLIX 12-15 incorporates original-patent design with modern enhancements. Its unique, 2-part form factor gives you safe, secure mounting solutions for your electronic investments. The Johnny Ray JR-208 Heavy Duty Swivel Mount for Humminbird HELIX 9-12 or SOLIX 12-15 boasts a 360 unlimited-rotating top you can adjust with 1 hand at any boating speed or condition. It also provides a quick, lever-release-style top that allows quick removal and storage of your mounted accessories, and can re-mount by simply snapping the swivel top back into place with 1 hand. Injection-molded components in this Johnny Ray mount ensure long-lasting durability with marine-grade strength. Supports up to 14 lbs. Requires 5"" square area for base. 3""H x 6.5""W x 3.25""D.Manufacturer model #: JR-208. Heavy-duty marine accessories mount Johnny Ray original-patent design with modern enhancements Unique 2-part form factor 360 unlimited-rotating top, adjustable with 1 hand Quick, easy lever release to remove accessories with 1 hand Injection-molded components Supports up to 14 lbs. Requires 5"" square area for base 3""H x 6.5""W x 3.25""D"