Swab out your entire trombone slide in one simple step. The 77-inch pull-through brush is able to clean all the curved tubing including the leadpipe and outer slide. Features • HW Brass-Saver for trombone is the easiest and safest way to clean saliva and corrosive mineral deposits from the inside of your horn. • The patented design features a non-metal flexible lead pipe/slide brush (approximately 1 diameter and 77 long) that won t scratch or get stuck. IMPORTANT: Color may vary.