Slide-O-Mix Trombone Lubricant Classic Set. Consisting of a 50ml and 10ml bottle of the classic trombone lubricant. Slide-O-Mix Trombone Lubricant gives your slide a fantastic glide. It is a 2-component liquid lubricant, which adheres very well to the slide surface. There is no sticking or stopping of the slide. Slide-O-Mix is very economical in use. Very helpful, especially for beginners, is the fact, that no faults in dosing are possible.