The Buffet R13 Bb Professional Clarinet is the legendary choice of professionals. Key of Bb. With .577″ bore; 66mm barrel; premium-quality grenadilla wood; 17-key, 6-ring nickel-plated keys; polycylindrical bore; undercut toneholes; and adjustable thumb rest. The Buffet R13 clarinet has a 40-year history of quality and craftsmanship. From the wind ensembles to the great symphony orchestras, it is the benchmark in clarinet manufacturing.