Descriptions: Piano Tuning Fork Tuner 440Hz Stainless Steel Musical Instrument Handle length: 38mm Fork length: 82mm tuning fork diameter: 4.5mm Total length: 120mm Features: High quality steel， polished and plated. The A440 tuning fork can delivers clear tone， longer sound and accurate tuning. It's suitable for any instrument which can be tunable ， but most commonly used with stringed instruments. Package Included: 1x Tuning Fork