Construction: Made of Stamped 304 Stainless Steel and Investment Cast 316 Stainless Steel, very high-quality material water resistant and can bear very harsh weather environment. Durable Quality: It is constructed with strong and sturdy quality Stainless Steel that provides maximum corrosion resistance and durability for long-term use. Suitable installation on quick and easy installation on vertical or horizontal, mostly used for boats, yachts, lawn Mowers, trucks, cars, etc. Dimensions: 3/4 x 1-inch Fit Rim Size, 2-inch O.D. Grip, Large grip is ergonomic, Bolt Diameter: is 5/16 inch (8.0 mm), and the depth of the bolt deep into the handle: is 2-3/4 inch (70 mm) 1-1/8 inch (28.5 mm) = 1-5/8 inch (41.5 mm). Package Includes Pack of 1 MARINE CITY 316 Stainless Steel Sport Boat Steering Wheel Spinning Ball-Bearing Knob with Cap.