The extension connects {HEAD ~ the energy source} to {TAIL ~ the distal end} and is formed of a material that can be easily flexed by hand to assume a multiple of different shapes and angles, and which can retain a given shape indefinitely 
to
The extension connects { HEAD ~ the energy source } to { TAIL ~ the distal end } and is formed of a material that can be easily flexed by hand to assume a multiple of different shapes and angles , and which can retain a given shape indefinitely
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH