Ultra-Pure Light Tuning Slide Lube is a nontoxic, synthetic lubricant designed for use on 1st or 3rd valve slides for trumpet, cornet or any brass instrument where the slide needs to move light and easy. The Ultra-Pure Light Slide Lube is compatible with Ultra-Pure Valve Oils and can even be used to lubricate corks on woodwind instruments. The Ultra-Pure Light Tuning Slide Lube is available in a convenient 7 gram container.