• Required for attachment of angle rotors and baskets to main shaft of Models CS, SBV, U, UV, K, V, and EXD
Also required for former Model CU-5000 Centrifuges with serial number lower than 23472582. Not required for PR-J, PR-6000, DPR-6000™, CRU- 5000, or current Model CU-5000 (serial numbers 23472582 and higher).
