These are drop-in replacements for Yamaha Pacifica. They come with adapters that would fit most of electric guitar tuner attachments (one screw at 135 degrees, or one at 90 degrees with respect to the tuning key pole. I did not need the adapters, since the 2 pins fall right in the holes drilled from the factory, but you can use them should you need to. Check the manufacturer website for more info.
And they are staggered as well, which is nice.
One of them has the finish a bit hazy, that's the only minus I can find for the 4 stars.