20-Pack Premium 4-1/2 Inch Diamond Turbo Cup Wheel for Grinding Concrete and Masonry, 9 Segments, Non-Threaded

The Super-Plus quality cup grinding wheel offers the best lifetime available on market 4.5" 4-1/2 inch 9 Segments Turbo Cup Wheel Good for general grinding/ stock removal 5/8-7/8 center arbor For wet or dry use. For use on angle grinders Large Grinding segments w/ heat treated steel bodies which provides increases durability and wheel life