SE DC3124CD Diamond Core Hole Saw Set, Grit 40, 1/8" (10 PC.) 10 diamond core hole saw sizes (inch): 1/8, 5/32, 13/64, 1/4, 9/32, 5/16, 11/32, 3/8, 7/16, and 1/2 Shank size: 1/8" Diamond coated tips Total length: 2-1/2" Great for cutting holes in tile, glass, marbles, gemstones, slate and while doing construction, home improvement, hobby, and craft work