SE DC31210CD Diamond Core Hole Saw Set, Grit 100, 1/8-Inch, 10 Piece 10 diamond core hole saw sizes (inch): 3/32, 1/8, 11/64, 13/64, 1/4, 9/32, 21/64, 23/64, 13/32, and 7/16 Shank size: 1/8-Inch Diamond coated tips Total length: 2-1/2-inch Useful for cutting holes in tile, glass, marbles, gemstones, slate and while doing construction, home improvement, hobby, and craft work