[PREMIUM QUALITY]: The 128Hz,256Hz,512Hz tuning fork set is made of high quality aluminum alloy material, high precision, light in weight, corrosion resistant, sturdy and durable and stainless, non-magnetic, superior performance and consistent frequency accuracy. The tuning fork produce clear tones, longer vibration sound and accurate tuning. Tuning forks can be put in the storage bag to avoid being other sharp objects. Please do not leave it in a damp place for too long or keep it dry and out of the sun before and after use. [PERFECT DESIGN]: Our tuning fork is ergonomic and compact in design, with a smooth extended handle for easy bone conduction testing and a round tail design for the perfect combination of beauty and comfort, and durable for carrying everywhere. [WIDE APPLICATIONS]: Each tuning fork produces specific frequencies, they are suitable for releasing stress, repair therapy, relieving stress pain, improving concentration, purifying the body and mind, also perfect for meditation or yoga, it is needed by health , therapists, musician teachers, science lovers, sound , etc. It is the perfect Valentine's Day, graduations, birthdays, etc. It will bring clear and beautiful sound to your family and friends. Colour:Multicolor Material:Aluminum alloy Package Contents: 3 x tuning forks with massage ball 1 x drumsticks(Colors and styles are random, no specification is accepted) 1 x cleaning cloths(Colors and styles are random, no specification is accepted) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.