this is not common for me to create an account on a web site just to leave a comment but I though this time it was important enough.
I bought theses gears from ebay (seller happyjester), and as it can happen, the parcel arrived damaged, cracked, opened and empty...
I immediately contacted the seller and quickly got a reply. After some exchanges, he advised me to engage ebay which I did. ebay was slow in managing my request but the seller did everything he could (he even called ebay directly) to get my purchase refund. this is not everyday you can count on a seller as devoted for his customers - really I was impressed because it wasn't his fault, just an accident which can happen to any from the US to France ( yes, I'm in France).
finally, I placed another order and got my gears delivered.
the packaging is very good, with a link to a youtube vid. for instructions and the gears protected inside a compact flash holder, and a nice sticker to remember you from where you got them.
theses gears are EXCELLENT quality - see the picture - they fit perfectly into the drive mechanism
I spent the day transferring the contents of my diskettes from an apple IIGS over ADT Pro
I already did +120 ejects and my drive works just like new ( unfortunately, not all my diskettes)
In conclusion, you can buy in confidence - these gears are worth the cost !