This Seachoice 3-Spoke Sports Steering Wheel With Turning Knob is made of Stainless Steel, so it looks great and delivers corrosion-resistant performance and durability. This 15 ½-inch-diameter Steering Wheel installs easily and features sturdy construction. It has a convenient Turning Knob that offers an easy-to-grip alternative way of controlling the wheel. This Steering Wheel fits on a ¾-inch tapered shaft, and it comes with a 5/8-inch-18 nut and a ½-inch-20 nut. Seachoice is committed to delivering quality marine accessories and OEM replacement parts to satisfy fishing, boating and watersports enthusiasts worldwide. Seachoice is run for and by boaters, offering a wide-ranging product line while remaining affordable.