The principal object of the present invention is to produce a face to face {HEAD ~ plate type swivel} with {TAIL ~ an interposed frictionless bearing material} at lower cost without any corresponding loss in simplicity of design, ease of assembly or strength of structure and to improve the ease of operation and ease of maintenance 
The principal object of the present invention is to produce a face to face { HEAD ~ plate type swivel } with { TAIL ~ an interposed frictionless bearing material } at lower cost without any corresponding loss in simplicity of design , ease of assembly or strength of structure and to improve the ease of operation and ease of maintenance
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