Handle length: 38mm ; Fork length: 82mm ; Tuning fork diameter: 4.5mm ; Total length: 120mm1 x A Tuning Fork - "A" tone 440 Hz. 1 x Soft Shell CaseThe 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.