The Herd Boss dairy cow hoof trimming disc set is perfect for high-volume maintenance trimming. Measuring 3.5 inches (89mm) in diameter, this durable disc features a six-tooth tungsten carbide chain securely seated between two sturdy discs. Designed for versatility, the Herd Boss includes a 7/8-inch (22mm) center hole, making it compatible with most 4.5-inch (115mm) angle grinders used worldwide. Optimize your hoof care routine with this reliable and efficient trimming tool. The 6-tooth tungsten-carbide chain shears hoof material with a smooth gliding motion and won't "grab" or jerk like face-cutting wheels, making each pass safer and more controlled.