Al Cass Fast Valve, Slide, & Key Oil

·Combination valve, slide, and musical instrument key lubricant ·Will not gum or separate under any weather conditions ·Petroleum-based oil ·2-oz bottle Al Cass Fast Valve, Slide, & Key Oil is multi-purpose lubricant for brass instruments that can be used on trumpet, baritone, and tuba valves and slides, as well as trombone slides and the french horn. An enduring favorite of brass players for decades.