The "M|O Ligature" combines the light "Master Ligature," which doesn't over-tighten the reed, with the "Optimum" ligature, which tightens the reed evenly from side to side, resulting in a quick response and sharp articulation, allowing for richer expression. Try this new ligature for a feel that's neither too heavy nor too light. Easy to Attach The M|O Ligature's contours are designed to beautifully and perfectly fit the mouthpiece. It's easy to attach and doesn't take much time. Optimum Screw The Optimum Ligature's screw is specially designed to secure the reed with just a few turns. This screw is also used in the M|O. This allows for quick reed changes. Reversed Left and Right Suspension For the reed to function correctly, the entire reed must vibrate evenly. The M|O's unique double-track mechanism provides uniform suspension to both sides of the reed. A single screw placed on the opposite side of the reed secures the reed without over-tightening. Contact Points The M|O Ligature secures the reed to the mouthpiece table with two contact points. Each groove reduces unnecessary pressure on the reed and protects the natural vibration of the reed. Shipping included. *There is some stickiness on the cap.