Features
1.Dimention : 45 to 75mm diameter type
2.Durability : 50000 times
3.Step : 45SG enable to change 2 to 28 step.
56SG enable change 2 to 34 step.
62SG enable change 2 to 46 step.
75SG enable change 2 to 58 step.
4.3 point support
5.Made in Japan
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