When adequately mounted, these steering wheels will fit marine helms with ABYC standard 3/4" tapered steering shafts and SeaStar Solutions or equivalent anti-vibratory lock nuts. Wheels with equidistant spokes are recommended for boats equipped with hydraulic steering, where a centered or master spoke' wheel cannot be maintained. Extremely bright and durable, allowing them to withstand the demands of tactical operations and mid-range precision. Precision, accuracy, and dependability at an affordable price for any operator. Key Features: Beautiful, high-detail styling Design with safety and performance in mind. Built to resist the sea's harshness. U.V. and materials that are resistant to corrosion. A stylish medallion is included in the center. Suitable for mechanical steering systems. ABYC Standard marine circular 3/4" tapered shaft for the helm, using Teleflex or equivalent anti-vibratory lock nuts. Replaces product 73195718125, 731957181251, SW59691, SW-59691P, SW59691P, 1-SW59691P, AP8021B. Specifications: SKU: SW-59691 UPC: 731957181251 Weight: 2.66 LBS Brand: SeaStar Solutions 13" Rim size. Color: Black For helms with ABYC standard round 3/4" tapered shafts, using Teleflex or equivalent anti-vibratory lock nuts. Suitable for mechanical steering systems. Constructed of U.V. and corrosion resistant materials. 13" rim size. Black.