Eisco-Tuning-Forks-Set-8-Eisco-PH0738B-p-An-eight-piece-set-of-nickel-plated-tuning-forks-with-plain-shanks-The-forks-are-marked-with-their-individual-frequencies-C-256 Hz-D-288 Hz-E-320 Hz-F-341 Hz-G-384 Hz-A-426 Hz-B-480 Hz-&-C-512 Hz-p-Eisco-PH0738B-Tuning-Forks-with-Wooden-Storage-Case-Set-of-8