SV sells it by the foot but they're out of stock for the time being.
if you don't need the patio kit you could order a couple blumats, and some of the 3mm drip line, then order some the kent system fittings that have been previously mentioned in this thread.
if you don't need the patio kit you could order a couple blumats, and some of the 3mm drip line, then order some the kent system fittings that have been previously mentioned in this thread.