Extremely rugged steel alloy construction Extra long hex bar design for easier turning Designed to straighten out dents in tailpipes and mufflers quickly and easily A must for all muffler and automotive garages Range from: 1-1/8" to 1-3/4", 1-1/2" to 2-1/2", 2-1/8" to 3-1/2" Includes: 3-pc. O-rings