T SEGMENT BLACK T-SEGMENT CUP WHEELS provide FAST, SMOOTH grinding action on concrete, masonry, and stone. These blade cut 20% FASTER and last longer than a standard diamond cup wheel. Use wet or dry on most hand-held electric or air grinders. Features: T-SEGMENT DESIGN - provides aggressive cutting action 5MM SEGMENT HEIGHT - long life performance VENTING HOLES - reduces core heat extending bade life AVAILABLE IN 2 ARBOR DIMENIONS: 7/8"-5/8" For Use with Grinder Flanges 5/8-11 Threaded - No Flanges, Threads Directly on the Grinder Usage: CONCRETE, FIELD STONES Quality Level: PREMIUM ARBOR: 7/8"- 5/8" (USE WITH FLANGES) DIAMETER     SEGMENTS       SEG. HEIGHT        ARBOR         4"               T-Style                    5 mm                    7/8"-5/8"