More particularly, it is an object of the present invention to provide a face to face plate type swivel with an interposed frictionless bearing material which functions to center the swivel plates and to decrease the resistance to {HEAD ~ rotation} of {TAIL ~ the rotary plate} 
of
More particularly , it is an object of the present invention to provide a face to face plate type swivel with an interposed frictionless bearing material which functions to center the swivel plates and to decrease the resistance to { HEAD ~ rotation } of { TAIL ~ the rotary plate }
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 OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL