Detachable Tow Hook -Key Lock

Although the RRsport is a 2012. Got a broken key in the detachable tow bar hook lock.

It looks like the the locking mechanism handle is a KNW500010 type without the ratchet grooves inside the handle.

In order to fit the later version KNW500020 kit with the ratchet grooves.

Are the kits interchangeable with screw centers etc or is it if I got the older version, I'm stuck with it.

I'm getting a feeling of deja-vu

OK.

Just to be clear, which is the latest Tow Bar/Hook handle version for L320 RRSport

KNW500010 or KNW500020

Thanks

OK.

Acquired the both later larger version of the Tow Hook Lock parts.
Its straightforward to change over from the early smaller bits to the larger later version with the ratchet on the inside.
Dismantled mine totally, cleaned and reassembled with fresh grease.