Well made, came with extra long intonation screws in addition to the same as the existing ones. Spare height adjusting grub screws, springs and an allen key. They are an exact fit, all done in 30 minutes. and very easy to intonate. They definately have increased the sustain and improved the overall tone of my new Fender player series 2 Stratocaster. Some people say they make the guitar brighter, but to me, they improve the whole tonal range giving a fuller sound to each string. I will be buying a set for my Telecaster next.