ASTRO PNEUMATIC 15.35 L x 11.22 W x 3.54 H Heavy-Duty Exhaust Pipe Stretcher Kit The ASTRO PNEUMATIC 78835 Exhaust Pipe Stretcher Kit is a heavy-duty, impact-driven expander designed for fitting smaller exhaust piping and creating secure exhaust seals. This kit provides a comprehensive solution for expanding mild steel exhaust pipes and is an essential tool for any professional automotive shop. With its durable construction and user-friendly design, the ASTRO PNEUMATIC 78835 makes exhaust pipe expansion and fitting tasks straightforward and efficient.