3 inch metal bond diamond grinding disc, 10 beveled edge segments, suitable for PrepMaster grinder, sti 4430, sti 3030, sti2420.

Excellent scratch pattern for old or new concrete

With improved diamonds and bonds, gives more fast grinding and longer.

Soft, medium and hard bond options.

Grit size 16/20#, 30/40#, 60/80# and 120/150# etc