型号                 规格

J173C-78.5       A:78.5mm B:33.5mm C:45mm

J173C-88.5       A:88.5mm B:38.5mm C:50mm

J173C-108.5     A:108.5mm B:48.5mm C:60mm

J173C-112.5     A:112.5mm B:50.5mm C:62mm