Easily upgrade you current Francois Louis ultimate or pure brass ligature with this set of 3 interchangeable pressure plates. Great for the players who want to experiment with sound and tone color. The Set includes: 1 plate in stainless steel for a free, light and a flexible sound with a quick response. 1 plate in solid brass for a deeper tone with more resistance, mostly appreciated by classical players. 1 plate in rubber coated stainless steel; the ideal compromise – light and flexible, yet darker.