Description: Non-directional 3 spoke steering wheel Aluminum alloy spokes, black grip with PU foam cover Included black center cap 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 coated PU foam cover Color: Black Steering Wheel Outer Diameter: Approx. 360 mm/14.2 inch Assembly Hub Height: Approx. 38 mm/1.5 inch Hub Diameter: Approx. 90 mm/3.5 inch Center Hole Inner Diameter: Approx. 19 mm/0.75 inch Center Hole Slot Inner Width: Approx. 4.5 mm/0.18 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!