Ultra-Pure Regular Tuning Slide Lube is a nontoxic, synthetic lubricant designed for use on all regular tuning slides, such as main tuning slides or the second valve slides. The Ultra-Pure Regular Slide Lube is compatible with Ultra-Pure Valve Oils and can even be used to lubricate corks on woodwind instruments. The Ultra-Pure Regular Tuning Slide Lube is available in a convenient 7 gram container.