1. High high-quality bodily experimental instrument, durable and practical. 2. The edges and corners are neat and the surface is chrome plated 3. The tuning fork set is used to illustrate the resonance of sound in school. 4. Can be used as a Universal tuning fork of a of experiments, such as the sound of the occurrence, interference, sound conduction of substances. It can be used for Music Learning and acoustic experiment. color:Wood shade + silver Material:wood+metal Package Contents: 1 x Tuning Fork 1 x Resonant Box 1 x Hammer Only the above package content, different products will not be included. Note: Light reflection and varied displays can cause the color of the item within the photograph barely various from the genuine thing. The length allowed error is +/- 1-3cm.