Yamaha YAC1021P Trombone Slide Oil Brand: Yamaha Model: YAC121P Yamaha trombone slide oil features a new formula specially designed to offer long-lasting performance and unmatched slide action The new formula contains no hydrocarbons so the lubricant will never dry out or become solid, preventing sticking of the slide Ideal for players of any level and is a favorite among many of the top trombone artists in the country