5 Large Diamond Hole Saw Drill Bits Tile Glass Marble One hole saw measures approximately 1/4" (6.5 mm) in diameter with a 1/8" (3 mm) shank One hole saw measures approximately 5/16" (8 mm) in diameter with a 1/8" (3 mm) shank One hole saw measures approximately 1/2" (13 mm) in diameter with a 1/4" (6.5 mm) shank One hole saw measures approximately 3/4" (19 mm) in diameter with a 1/4" (6.5 mm) shank One hole saw measures approximately 1" (25.5 mm) in diameter with a 1/4" (6.5 mm) shank