This is a 5 Piece Tuning Fork Set comes complete in a case. The is great to use to "tune" your private piercings or those of your partner. Take these tuning forks and bang your hand and it will vibrate like you can not imagine. There are 5 different forks and also 2 sets of adjustable weights so that you can try all different vibration frequencies. Just touch the vibrating fork to your jewelry and you are really in for a treat. Especially once you find your own personal frequency that works the best for you. The tuning forks are custom made with a rough low polish finish.