Material: Metal, 1/4" steel structure, powder coating to prevent rust and corrosion. Adjusts to fit pin-style hitches up to 2" wide. Slides over any 1-7/8" or 2" ball. Throat/neck opening is 1.25". Note：Never remove ball off your Lawn Tractor or ATV again. If you encounter any problems while purchasing,please don't hesitate to tell us, we will try our best to help you solve.