thought i would throw a heads up out there.
i use hummingbird tubes because they are the only disposables that work with t-tech.
last order from friction supply came and they have changed the design i believe....the tip does not detach now allowing a t-tech cartridge to be inserted.

not sure what is going on....so i TRIED to contact friction.
called twice a day for 3 days....left a message asking for return call and sent e-mail..........NO RESPONSE.
worst customer service that i have ever seen!

just a heads up in case anybody does the same.