Specifications: Product Name: Marine Steering Wheel Rotator Material: 316 Stainless Steel Product Size: Specific size as shown in the picture (Note: Please allow 1-2mm errors due to manual measurement and slight color difference caused by light and monitor screen.) Sturdy and Durable: The steering wheel rotator is made of marine grade 316 stainless steel, which is rust-proof, corrosion-resistant, not easy to deform, and has a long service life. Unique Design: The marine steering wheel power knob adopts a spherical design, which provides a comfortable grip when maneuvering, and the rolling rotary knob allows for quick manipulation of the steering wheel. Function: Use the marine steering wheel to rotate the handle to make your control more stable and labor-saving, and drive easily your yacht to the mooring. Wide range of applications: The auxiliary steering wheel booster is suitable for ships, yachts, RVs, boats, etc.