PRE-CUT in 2-foot lengths, which provides enough for both intake from the reservoir and return from the OPV valve. (Your 2’ piece will need to be cut into two 1-foot pieces.)
Fits:
Barista
Via Venezia
Note: from batch to batch we receive them with the outside dimeter ether of 8 or 10mm, since for this application listed above there are no hose clamps, ether size fits.