BG Revelation series ligatures feature a brass support which holds the reed gently, allowing it to vibrate freely. The brass helps you to produce a bright, open sound and makes easy work of staccato passages. BG fabric ligatures are made from a specially treated material to make them hard-wearing and reliable, and feature a single tightening screw for easy fitting. The L9R is designed to fit most bass clarinet mouthpieces and comes with a mouthpiece cap. Usually dispatched within 2 - 4 working days.