SE JT3405DS Doming Punch and Dapping Block Set (25 PC.) Dapping block size (inch): 2 x 2 x 2 Dapping block with 18 depressions Hardness: 52-55 HRC 24 punch head sizes (mm): 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, and 24 Wooden storage stand size (mm): 35 x 195 x 115