T5 fluorescent tubes are just being introduced over here in NZ.(the longer ones)
In case you are not aware, the T5 tube is 5/8" in diameter(16mm) and comes in roughly the same length as the older T8(1")tubes, although it was only ever used in the shorter lengths(300mm max).
But with any new tube system, you need new fittings,check these ones out at www.thornlight.co.nz you will however need to click on Micropak, once you get there.
Tell me what you think of these new fittings?. [Linked Image]