9pcs Bi-metal hole saw set content: 19mm, 22mm, 29mm, 38mm, 44mm, 57mm Two arbors 1/4",round 7/16",hex 1pc adapter 9pcs Bi-metal hole saw set content: 19mm, 22mm, 29mm, 38mm, 44mm, 57mmTwo arbors 1/4",round 7/16",hex1pc adapter CODEDESCRIPTIONPACK10150219mm, 22mm, 29mm, 38mm, 44mm, 57mm;Two arbors 1/4",round; 7/16",hex;1pc adapter1 9pcs bi-metal hole saw set