Premium key oil.
Roche-Thomas Premium line of lubricants are formulated and bottled in their own facilities using a special filtering process that eliminates impurities and residue. The unique process ensures that you receive a fast-acting lubricant with a clean coat that is virtually dust and lint free. This premium key oil is a superior blend and won't harm your instrument. Key oil by design is a heavier oil than valve\slide oil, and is a clear oil with no dies or additives. Priced right for all musicians; formulated for the professionals. Roche-Thomas's premium key oil comes in a 2 oz. cylinder bottle with a leak-proof one-piece cap that has a controlled dropper tip. Roche-Thomas is proud to say that ALL aspects of their products are manufactured in the USA.