The Vandoren Microfibre Clarinet Pull Through SW200 is designed for Bb Clarinet. Combining the delicacy and absorbency of silk with the durability of microfibre, The gentle fibres are specially designed to thoroughly clean your clarinet while protecting the finish. Made of high-quality, specially designed microfibres. Strong cord with easy pull-through weight. Cleans easily with soap and water. Durable and long-lasting for years of reliable use.