LaVieEnRose Glass Cutting Hole Saw/Hank Heavy Duty Diamond Dust Hole Saw, 1/4-Inch, 5-Piece Sizes: 5/32, 1/4, 5/16, 3/8, 1/2-inch 5-piece diamond dust hole saw with 1/4-inch shank Set is ideal for drilling clean and accurate holes The diamond coating on these saws give superior performance and life Satisfied all your hole saw needed