A gas tubing reel includes a housing having {HEAD ~ a tubing reel} rotatably positioned therein for unwinding and retracting {TAIL ~ tubing} 
rotatably positioned for retracting
A gas tubing reel includes a housing having { HEAD ~ a tubing reel } rotatably positioned therein for unwinding and retracting { TAIL ~ tubing }
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL OTH REL OTH OTH REL TAIL TAIL TAIL TAIL TAIL