The Teravan Medium Soft Stack Brush is expertly designed to wrap around truck exhaust stacks and smoke stack pipes for thorough, effortless cleaning. With high-quality, acid-resistant fibers, this exhaust stack cleaning brush combines superior durability and easy maintenance with non-abrasive polystyrene bristles that are gentle on polished surfaces. The medium soft material offers impressive scrubbing power to tackle grime while preserving the finish of metal stacks. Each Teravan brush is built for flexibility, featuring dual-thread options: one for straight brushing and another for angled brushing, making it ideal for both DIY truck maintenance and professional-grade cleaning. Thick-filled and proudly Made in Canada, these brushes deliver reliable performance for any truck stack cleaner. Available in two versatile sizes to fit different exhaust pipes—a small size for 4 to 6-inch diameters and a large size for 8 to 10 inches. Each brush stands 2" high, with tough, 1.5"-long bristles that reach into every groove for a complete clean.