I.M. (Investigations Manchegas) Ligature - Briarwood Made of briarwood, a hard wood. It tightens by lowering the movable ring and loosens when raised. The diameter can be finely adjusted, unaffected by the reed's thickness. In my personal opinion, the sound resonates incredibly well, projecting a dark, thick tone far and wide. Furthermore, the timbre and sound quality remain consistent regardless of dynamics. Also, it has a very impactful appearance when attached. Thank you for viewing. Please check my profile before purchasing.