HUB003-N6 hubs, newest ,6 pawls ,smooth；With SILVEROCK logo. Hubs: bearings 2x4, 6 pawls, smooth ,,noise. New hub ,N6 ,6 pawls, more smooth. News 6 pawls ,and bearins NBK from taiwan. Fits for 16" 349 Folding bike (Hub axle system 74/112mm ( NOT 305 WHEELS), fit for brompton ,3sixty bikes. ).
eBay