Li-Rigid Couplings (RM Couplings) tse nang le lihlahla tsa Taper Bore li fa basebelisi tokiso e potlakileng le e bonolo ea li-shaft tse hokelang ka thata ka lebaka la khetho e pharaletseng ea boholo ba shaft ea lihlahla tsa Taper Bore. Flange e tona e ka kenya sehlahla ho tloha lehlakoreng la Hub (H) kapa ho tloha lehlakoreng la Flange (F). E tšehali e lula e e-na le sehlahla se loketseng F se fanang ka mefuta e 'meli ea kopano ea ho kopanya HF le FF. Ha u sebelisa li-shafts tse otlolohileng, khetha kopano e loketseng ka ho fetisisa.