+1 on the link StuPot
Looks good quality stuff, and at a pretty reasonable price for 25foot. Though I believe there may be a slight difference in the OD or ID of the stock tubing for the VTower over the EQ..
I only got my upgraded stuff the other day(ordered donkeys ago, long story)anyway, I used my new tubing for whip.. so much easier and tastier IME. Blew a bag.. used the teeniest bit of it to marry the bag to the elbow so as to make it full glass all the way in.
Also it stopped the GonG twist when passin a whip to and fro where as in contrast, with the stock, I was so concerned about effin up the frost that I'd have to lift up the elbow, reposition the whip for my buddies use go then rinse and repeat.