not sure what this came off of they have been slightly used or well kept they need to be polished stainless steal magnet wont stick to them  they have small scratches were my finger is pointing to the pipe  were probaly the wrong size to big or their car was to low their is a small scratchs on both pipes at the same place were you scratch your pipes when you car is to low the opening  is 4"x 2" meusuring front inner lip at the outer lip 4 1/2" x 2 3/4"  the length is 10"  .