Works exactly as intended with my 2019 'M' tip, and the mouthpiece/adapter fits perfectly into almost all my glass pieces' female adapters. Cools down the vapor incredibly well. The length also makes it very easy for me to rotate while heating, as I have large hands. An extra shout-out to Kristian for the incredible customer service after issues with the delivery service.
In the beginning I was a bit hesitant to order because they don't provide an option to pay with the PayPal, but I am very happy that I did! My new dynavape is very pretty. It requires a bit of a figuring out to make it work with dry herbs but works well with weed every time.