The product is a box of 10 United Abrasive/Sait 20096 Type 27 grinding wheels, measuring 9 inches in diameter. 1/4” thick 5/8-11 thread . These grinding abrasives are made of aluminum oxide and feature a depressed center design. Manufactured in the United States, these grinding wheels are ideal for metalworking and come without a battery included. With a weight of 1.8500 pounds, these high-quality grinding wheels are designed for precision and efficiency in various industrial applications.