John Deere Deluxe Steering Knob. Fits all steering wheels up to 1 1/4" (31.7mm) thick. Comfortable ergonomic rubber grip. The improved plastic clamp means no more bolts sticking up at your hands or down on your knees like the older style grips. It comes with a rubber sleeve for some of the older, thinner steering wheels. Color: Black & Green TY27749 is an OEM John Deere part.