型号
直径
AT474-6
11/16"
(17.46 mm)
AT474-6X
23/32"
(18.26 mm)
AT474-7
3/4"
(19.05 mm)
AT474-7X
25/32"
(19.84 mm)
AT474-8
13/16"
(20.64 mm)
AT474-8X
27/32"
(21.43 mm)
AT474-9
7/8"
(22.23 mm)
AT474-9X
29/32"
(23.02mm)
AT474-10
15/16"
(23.81 mm)
AT474-10X
31/32"
(24.61 mm)
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