Case 430 470 530 570 1200 1470 Tractor and W Series Loader Steering Wheel. This wheel may fit other Case applications. 36 Spline. We’ve been looking for a long time for these wheels and they are nice. 18″ in diameter with grips on the underside, and a deep glossy black. The Center Cap is shown for display only and is not included at this price. If you need the Cap. search our store, or contact us. We will gladly combine purchases.