37.5 mm, 45 mm, 52.5 mm, 60 mm, 67.5 mm(1.5 in, 1.8 in, 2.1 in, 2.4 in, 2.7 in)
2.7 mm, 3.5 mm(0.1 in, 0.1 in)
4 unit, 5 unit, 6 unit, 7 unit, 8 unit
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