This is the standard ligature that comes with YAMAHA clarinets. Silver-plated. It has a screw on the reed side for top fastening. Please prepare the cap separately.
The M|O ligature is a fusion of the Master ligature, which tightens the reed with moderate force, and the Optimum, which tightens the reed evenly on both sides. It features a sharp attack as well as improved response, which broadens the range of expression.