CTA Tools 2624   Tailpipe Expander, Large Designed to Straighten out Dents, Round out Pipes and Mufflers without Damaging Them Great for Removing Clamp Grooves Allows You to Spread an Exhaust Tail Pipe in Order to Slide Another Inside Durable Steel Construction Allows for Strength and Durability Range is 2-1/8 to 3-1/2-Inch (54 to 89-Millmeters) I.D.