SHOP › 528 Tuning Fork and Instructional Video Bundle Image 1 of 2 Image 2 of 2 528 Tuning Fork and Instructional Video Bundle $52.80 Kit comes with high quality 528 hz tuning fork, mallet and download code to access customized training videos. Add To Cart Added! Kit comes with high quality 528 hz tuning fork, mallet and download code to access customized training videos.