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
Manufacturer's Part Number: #DW4428