aceoffix hub freehub 28 holes 7 speed external folding bike

The hhb designed for brompton 28/28 average hole
74mm front hub, 112mm rear hub for brompton, shaft 8mm

the shell is made of aluminum alloy and the core is 7075 aluminhn alloy hard anodized

6 speed can be installed with 9s gear and 7 speed can be installed with 11s gear

big bearing is used in the hub, which greatly impoves the durability

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