The tubing reel is biased in a retracting direction and includes ratcheting and releasing {HEAD ~ means} for selectably paying out or retracting {TAIL ~ the tubing} 
for selectably paying out
The tubing reel is biased in a retracting direction and includes ratcheting and releasing { HEAD ~ means } for selectably paying out or retracting { TAIL ~ the tubing }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL REL REL REL OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL