Bought it for a Yamaha FG820 and while they look nice and really lift the looks of the guitar to another level, they do not fit in the pin holes all the way down like the original pins, as there is about a 3 millimeter gap left which leaves the pins higher than the originals an so it slightly changes the palm-muting comfortability. Could be remedied by widening the bridgepin holes or filing down the pins themselves, but I couldn't be bothered. For other guitars they might be a perfect fit. No oxidation after 2 years of use. Here's the measurements I took:
5,5mm = width of the wide upper end of the pin insert
9mm = pin head
27,5mm = total height