{HEAD ~ The grommet} 66 provides {TAIL ~ bearing surface} made of a smooth, low friction material, such as nylon 
provides
{ HEAD ~ The grommet } 66 provides { TAIL ~ bearing surface } made of a smooth , low friction material , such as nylon
HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH