Feature●Tuning fork set creates a bridge between sound and form (or structure) to demonstrate vibrational energy, frequency, sound waves, and pitch for music or physics classes●Acoustic resonator set can also be used traditionally to tune up any musical instrument or as relaxing sound therapy to relax the body and achieve optimal physical balance●Steel two-pronged fork set is durable, accurate set for exploring sound physics●Set of 8 tuning forks in assorted frequencies (from C: 256 to C: 512 Hertz) offer assorted short, long, subtle, and loud sounds for optimal auditory ranges●Sleek wooden storage box with velvet lining contains all 8 tuning for easy transportation to school, offices, therapy centers, and homeDescription Tuning forks offer a safe and sound way to demonstrate energy and vibration of sound for physics and music classes. This set of 8 two-prong forks are made of forged steel metal and include the following frequencies: C 256, D 288, E 320, F 341.3, G 384, A 426.7, B 480, and C 512 Hertz (Hz). Each are chrome/blue plated in plain shank form. Set of 8 come fitted in a velvet-lined case. Each assorted fork measures approximately 6 to 10 inches long.