Manufacturer's Part Number: #DW4428
Silicon carbide grain for long wheel life in all masonry materials. High grain concentration for aggressive grinding action and smoother running wheels. Proprietary wheel design ensures durable long life wheels. 3 full sheets of glass in every 1/4-inch wheel and 2 full sheets in every 1/8-inch wheel for added durability and safety.
Arbor hole size: 1/8in
Diameter: 4 in