Developed by celebrated clarinetist and music educator Daniel Bonade the Bonade ligature has been a staple of professional clarinet players since its release in 1957. Made from nickel-plated metal with a two-screw closure the Bonade 2253U inverted bass clarinet ligature is crafted to hold a reed firmly in place while allowing it to vibrate freely across its length and width thereby improving tone and expanding the dynamic range of your instrument.