This set of (2) Master Mechanic cutting wheels are perfect for cutting through metal and steel with ease. Measuring at 4 inches in diameter and 1/4 inch thick, these wheels are powerful and efficient. They are designed to work with corded electric power sources and do not require any batteries. The brand Master Mechanic is known for their high-quality tools and these cutting wheels are no exception. They come in a set of two, ensuring that you have a backup on hand for your projects. The chuck size is 1 1/2 inches, making them compatible with a wide range of rotary tools. Enhance your workshop with this essential tool set today!