Looking for a wire wheel that can handle the toughest metal? The HART 4-Inch Twisted Knot Grinding Wheel is your perfect choice. With 2X more material removal this wire wheel can take on any project. Plus it works with all 4 ½” angle grinders with a 7/8” arbor for your convince. Get the job done quickly and easily with the HART 4” Twisted Knot Grinding Wheel.