2PC EXHAUST MUFFLERS TAIL PIPE EXPANDER 1-1/8" ~ 2-1/2" 2PC EXHAUST MUFFLERS TAIL PIPE EXPANDER 1-1/8" ~ 2-1/2" Drop forged with heat treated steel Designed quickly and easily straighten out clamp dent in mufflers and tailpipes A simple wrench turn expands pipe for exhaust system repair and installation Works with all 1-1/8" to 2-1/2"ID. thin wall pipes