This Bach Gold Standard Synthetic rotor oil is a new formula from 2022 originally released as an updated Holton rotor oil (our item 134703). It has been rebranded as Bach but is the same stuff. As an oil, it compares very well to Hetman 11—if you like Hetman 11, you're going to love this oil.
Note: This item replaces all previous Holton and Bach rotary oils, synthetic or mineral based.