30 mm, 45 mm, 60 mm(1.2 in, 1.8 in, 2.4 in)
11 unit, 15 unit, 21 unit, 23 unit
1 mm, 1.5 mm, 1.8 mm, 2 mm(0 in, 0.1 in, 0.1 in, 0.1 in)