Description: Non-directional 3 spoke steering wheel Aluminum alloy spokes, black grip The wheel includes a cap to put in the center mounting hole once you have secured the wheel to the steering shaft. Universal fits standard 3/4" ( 19 mm ) tapered shaft Commonly used on most marine boats, vessels, yacht, pontoon boat and so on Specification: Material: Aluminum alloy + ABS Color: Black and Polished chrome Steering Wheel Outer Diameter: Approx. 350mm/13.7 inch Assembly Hub Height: Approx. 37 mm/1.45 inch Hub Diameter: Approx. 85 mm/3.35 inch Center Hole Inner Diameter: Approx. 19 mm/0.75 inch Center Hole Slot Inner Width: Approx. 5.5 mm/0.22 inch Package Includes: 1 Piece Boat Steering Wheel Note: Please allow slightly difference due to manual measurement. Color may be slightly different since different monitor. Thanks!