2pcs Tuning Fork 440HZ Virbration, Resonance Tuning Fork with Wood Resonator Box Experimental Instrument with Tuning Fork Knocker 6.5 x 16mm / 0.3 x 0.6in

Specification: Condition: 100% brand new Frequency: 440 cycles per second Fork section size: 6.5 * 16mm / 0.3 * 0.6in Tuning fork arm length: approx. 109mm / 4.3in Distance between arms:17mm / 0.7in Package List: 2* Tuning Fork 2* Wood Resonator Box 1* Knocker Note: 1. The tuning fork should be protected from breaking and high heat to prevent frequency change. 2. The tuning fork and the sound box should have a reliable connection and should not be shaken when the tuning fork is inserted or removed.