This 13 piece doming punches and block set is ideal for forming and doming sheet metal and wire. Constructed with heavy duty carbon steel and comes with a labeled wooden storage stand. Block size: 1" x 1" x 1" Punch sizes: 3.5, 3.8, 4.3, 5, 5.5, 6.4, 6.7, 7, 7.3, 8, 13, 13.5 mm