GB720

Gear ratio : 1:20

GB720W

Gear ratio : 1:20

GB720B

Gear ratio : 1:20

GB707

Gear ratio : 1:20

GB1

Gear ratio : 1:21

GB2

Gear ratio : 1:26

GB29

Gear ratio : 1:26

GB11W

Gear ratio : 1:20

FB3

Gear ratio : 1:20