This is a used carburetor set for a 1987-1990 Kawasaki Ninja 750R (ZX750). Bowls and Jets are clean, everything that moves does as it should. Some of the screws are missing (6 from the bowls, 1 from the tops), others have started to strip/rust and should be replaced. The outside of the bodies is also a bit dirty and should be gone over. A final inspection is recommended before installation. Verify the provided part code with a reliable source for proper fitment.