Bi-metal construction and hard steel RC 65-66 for long life, 4/6 variable pitch teeth for reduced noise and improved performance with clearly printed hole saw sizes for quick retrieval. Includes a 7/8, 1-1/8, 1-3/8, 1-3/4, 2, 2-1/2 and 1/2 and 3/8 in hex shank, pilot drill and carrying case.