Brand New 304 Stainless Steel Double Wall polished tip.  I only have 2 like this that were custom made to my specifications.  There isn't another tip on the market like this.  These are perfect for a muffler delete.  The inner wall has some perforated holes in it to allow the exhaust gases to travel inside the space between both pipes to create some extra sound.  I opted to not have that many holes as I didn't want to create too much of a hollow sound, but just enough to capture a truly unique sound.  It might even lower the drone a little as the exhaust has a place to expand a little.  Most double wall tips have no perforated pipe, and the ones that do all have dampening material to give you a resonated tip.  That's where mine are different.  These would be perfect for those that want blast pipes or have the extra room towards the back of the vehicle to not run mufflers, but run 2 very long dual wall tips instead.  

19" total length

16" tip length

3" connecting pipe

2.5" ID inlet

3.5" OD outlet (3.5" OD outer wall)

* These will slide over 2.5" exhaust piping, because they have an inner diameter of 2.5" as opposed to outer diameter.

Inner pipe is made from 1.5mm thickness pipe.  The outer wall is 1.5mm as well, so it adds some weight to the tip and isn't cheap and light.  These come polished too!  304 Stainless is preferred over 409 stainless for rust proof properties.  The added chromium will prevent rust from forming.  You still have to occasionally polish stainless to prevent any surface discoloration, as it can slightly rust in salty environments or very humid environments, but it is just more hassle free than cheaper stainless alternatives.