It is the buyers responsibility to examine all items to determine if an item is safe for use.
The buyer accepts all responsibility for use of items purchased
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Campagnolo part 630 we believe - it's a downtube cable stop with a tunnel for the rear derailleur, with a stop for cable housing going to the front derailleur, and an arm coming out to grab your pump (not sure what pump it works with). NOS and a nice example. The photos are representative of the one you will receive.