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 so there is no sticking or stopping of the slide. Slide-O-Mix is very economical in use, only a small amount is needed. However, it is not a problem if too much is used - very useful for beginners or younger players. It comes in a handy 50ml bottle and is easy to apply to the slide.