Today (October 4) there is a teaser home page with the message:
"Hi! Thanks for checking out the new Quest Aerospace website. We are currently stocking the website with hundreds of items and will be open for business on October 5, 2016."
To visit the Quest Website, CLICK HERE
Here's an illustration I can't easily read, the screen goes dark a second after the website is opened.
Along with the Quest Metric tube sizes - 20, 35 & 50mm, it also lists BT-20, BT-30, BT-40. BT-50 and BT-80.