These came off a brand new $1200 guitar. Work very well & I had no tuning issues what so ever with these for the few days I kept them. I like to over bend as a lead guy so I needed something locking for live play which is why I switched. These are over $100 new after tax. Make an offer. The 25/64" post hole & 23 mm post length ensure compatibility with most guitars and basses.
TAKE NOTICE: These will not work for something like a Fender Strat style guitar which is called In-Line. 3+3 means it fits guitars that have Gibson Les Paul Style Headstocks!