bicycle repair. cleaning and replacement of grease in the rear hub of the bike. the rear wheel of the bike on a black background

bicycle bike part wheel gear repair sport service chain cycle equipment mountain spoke transportation hub grease background maintenance worker shop closeup detail speed mechanic tool work workshop bearing circle black metal axis fix white biking fixing professional hand technology isolated macro clean old business ride road oil rim nut rear repair cleaning replacement bike background spokes hubs are gray modern workshop freehub close