In addition to the Jazzmaster, Fender used the floating tremolo on the then top-of-the-line Fender Jaguars, released in 1962, and also on the Fender Bass VI, released in 1961. Jaguar and Jazzmasters share the same bridge plate and string saddles, though Jaguar bridges (and the earliest Jazzmaster bridges) have taller "legs". The two are functionally interchangeable and replacement parts for each are identical. The Bass VI bridge has a wider plate and longer intonation screws to accommodate bass string intonation, and the saddles have threads cut for larger diameter strings. There have also been a small number of not very notable imitations by other makers, generally without the locking knob. Fender discontinued all floating tremolo models by 1980, but reintroduced both the Jazzmaster and Jaguar first as Japanese models in the mid 1980s, then as American-made reissues in the 1990s. The tremolo-equipped Bass VI was reintroduced as a US Custom Shop model in 2006.