A Royal Blue British-made 100% cotton bell cover by Alliance Brass. Alliance Brass bell covers are very easy to put on and take off and has only a very slight effect on the sound. A great way of helping reduce the risk of spreading harmful aerosols and droplets, especially in school ensembles and bands. Made by a traditional British textile business for Alliance Brass. Single, elasticised blue cotton bell cover to suit Trumpet, Alto Sax or Bass Clarinet. Other sizes are also available to order - please enquire on 03 5223 1724. Oxygen Music stocks a range of essential accessories for care and hygiene of brass instruments including the Alliance cotton bell covers.