This polish is different from other metal polishes. My trombone has got an unlaquered slide and valvesection, while the bell is laquered. This means I have to use different polishes and Yamaha cover it all.
Unlike from other metalploshes - this polish does not scratch the metal as much as other polishes. It almost does not scratch it at all. I am really satisfied with this product and I am sure going to buy it again!