… Gears and gearing, other than toothed wheels, chain sprockets and other transmission elements presented separately; ball or roller screws; gear boxes and other speed changers, including torque converters …
Classification opinions
… of (1) one or more metal rings for mounting on the fixed part of the machine or mechanical appliance with which it is used and (2) a toothed metal ring to carry the mobile part of this machine …
WCO Trade Tools provides essential information to support your trade activity.