Standard and highly-rated Tromba T2 valve oil. I've used this for many years, but I'm selling it because I've changed instruments and switched to a different oil. (I listed this once before, but it was difficult to understand the amount of oil in the bottles, so I've reorganized and relisted it.) T2 is the most standard (medium viscosity) oil from Tromba, suitable for all-around use, produces a good sound, and lasts a long time. The performance is top-notch. I think it's a standard choice, especially for trumpets. When the valve action wasn't quite right with other oils, I switched to this oil and used it for a long time. The original bottle on the left has about 100% remaining, and I'm including three bottles that have been decanted from the original bottle. Two bottles have about 30ml each, almost full. The original bottle is 63ml, so this is equivalent to a little over two bottles in total. All the contents are T2. It was very convenient to carry the oil in smaller bottles for compact cases or for refills during live performances, so I'm selling it like this.