型号
直径
AT474-16
1-5/16"
(33.34 mm)
AT474-16X
1-11/32"
(34.13 mm)
AT474-17
1-3/8"
(34.93 mm)
AT474-17X
1-13/32"
(35.72 mm)
AT474-18
1-7/16"
(36.51 mm)
AT474-18X
1-15/32"
(37.31 mm)
AT474-19
1-1/2"
(38.10 mm)
AT474-19X
1-17/32"
(38.89 mm)
AT474-20
1-9/16"
(39.69 mm)
AT474-20X
1-19/32"
(40.48 mm)
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