Valve/Slide/Key Oil- Al Cass-Z #5166
M**E
Real oil. True to description
I was sceptic about buying this product online because my daughter's music teacher always warn us about the danger of using fake products on the expensive music instruments, but I am glad I tried this oil, it turned out to be perfect for my kid's trumpet.
A**L
It's valve oil
If it says Al Cass it's got to be the best.
