This product is a 30-pack of 3 inch coarse crimped wire cup brushes designed for use with angle grinders. Each brush has a 5/8"-11 threaded shank for easy installation and maximum performance. With a weight of 10.92 pounds and dimensions of 12.2 x 10.63 x 0.1 inches, these brushes are durable and efficient for metalworking and manufacturing tasks. Made in the United States, this product is a reliable choice for businesses in the industrial sector needing high-quality abrasives for their projects.