This vintage Synchrotone Pitch Pipe S-10 is a must-have for any musician who owns a guitar. It was made in the United States by Kratt CO. and is suitable for tuning a guitar. The pitch pipe is designed for use with a guitar and its six strings, and is made of durable materials to ensure long-lasting use. The black color of the tuning pipe adds a sophisticated look to the instrument, making it a stylish addition to any guitar set. This classic collectible vintage piece is a great find for any music lover or collector.