Material: Bi-metal Hole saw size:3/4 (19mm),7/8 (22mm), 1- 1/8 (29mm),1-3/8 (35mm),1-1/2 (38mm),1- 3/4 (44mm),2 (51mm),2-1/4 (57mm),2- 1/2 (64mm) 1Pcs Arbors：1/4 Round Shank ,Fit Size:9/16 ~1-3/16 1Pcs Arbors: 7/16 Hex Shank ,Fit Size:1- 1/4 ~8-17/64
