SIT stands for Stay In Tune and this is exactly what the US company founded in 1975 has set its sights on the flag
The SIT strings are given an above-average tuning stability by a special chemical substance into which the ball ends are dipped. Among the best-known SIT users are Richard Z. Kruspe, Paul Landers (both Rammstein), My Chemical Romance, POD, Mia, Beatsteaks, God Forbid, Jack Bruce, Donots, In Extremo, Madsen, Atrocity and Overkill call.