In some embodiments, grooves 350 and 352 are annular threaded grooves and flexible electrical connectors 322 and 324 include threads such that {HEAD ~ the connectors} 322 and 324 can be screwed into {TAIL ~ grooves} 350 and 352 
screwed into
In some embodiments , grooves 350 and 352 are annular threaded grooves and flexible electrical connectors 322 and 324 include threads such that { HEAD ~ the connectors } 322 and 324 can be screwed into { TAIL ~ grooves } 350 and 352
OTH OTH OTH OTH OTH OTH OTH 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 REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH