Description: Non-directional Flat 3 spoke steering wheel Polished to a bright mirror finish. Universal fits standard 3/4" ( 19 mm ) tapered shaft Finger indents around stainless steel wheel for comfortable grip. Commonly used on most marine boats, vessels, yacht, pontoon boat and so on Specification: Material: Stainless Steel Color: Silver Knob: No Steering Wheel Outer Diameter: Approx. 340 mm/13.4 inch Assembly Hub Height: Approx. 50 mm/2 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 mm/0.2 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!