Ordered one of these for my Ehle Extended reach hollow base to replace the standard down tube. I was hoping it would be a little closer to the bottom. It reach's about 6 inches into the pipe ( top of outer fitting to tip ) Maybe a 15.5 cm Id like to find a 16 or 16.5 cm nice and close to the bottom.

I bought this to go along with my Ehle 500ml piece. I found that it was a bit long for my particular bong and thus doesn't form a perfect seal. At times I notice that smoke is escaping through the joint but only just a bit. I have also noticed that it has developed a small fissure in the glass after only a week of use. It also has a residual bit of glass hanging inside of it from where the holes were blown which doesn't attest to its quality. It performs as intended for now, but I fully expect it will break in the future. If I could do it all over again I would buy a pre-cooler instead.

works well but is hard to clean other than that there are no other problems

A diffuser that works well. A little short, 7", for my bong (G-Spot Hanger Ice), but using more water does the trick. ; ) Highly recommended for those whole enjoy very smooth hits...