We developed this brush to clean completely around the tight bends in tuning slides of the trumpet, cornet, flugelhorn, or french horn. Just drop the chain through the slide and shake the end out.� Then pull it through. The brush is flexible enough to make it all the way around the bend. The part of the chain near the brush is covered by a flexible plastic tube to prevent scratching inside the slides as you pull it through.
Ultra-Pure Slide Sweep Brush ~ Trumpet