This locks the insert to the sleeve and when the sleeve is open about its slit {HEAD ~ the insert} is also concurrently open about its slit allowing {TAIL ~ both the sleeve} and the insert to be easily slipped around a pipe or tubular member 
This locks the insert to the sleeve and when the sleeve is open about its slit { HEAD ~ the insert } is also concurrently open about its slit allowing { TAIL ~ both the sleeve } and the insert to be easily slipped around a pipe or tubular member
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH