Tuning Forks Pair Aluminum Alloy Quality for Music and Healing 1500 & 2475 CPS. Set of 2 in original plastic container. 1500 CPS is 6” and 2475 CPS is 5.75”. The tuning forks are in good condition with scratches and a small “chip” on the 2475 CPS. The plastic case has a fine crack but doesn’t impede the opening or closing. Any questions or concerns please let me know. Thanks for visiting !!