With Vandoren's Optimum ligature, you'll find that more and more reeds perform to your expectations. Unsurpassed performance and reliability Precise and rapid tightening; a unique double-track screw mechanism tightens both sides of the ligature equally. Vertical and symmetrical tightening:- Adjusts easily on the mouthpiece- The reed remains exactly in place- Neither reed nor ligature are compressed at the sides. A unique vented cap allows reeds to dry quickly. Easily adjusts for any situation 3