7/8X1/4 770 ALUMINUM COUPLING, 2.125 INCH MODEL 500 C-200 C-300. C-400. C-500 E-570 E-670 ELASTIC INTERMEDIATE RING FOR MAGNALOY CLUTCH SIZE. 270 NEOPRENE INSERT ELEMENT FOR AN M500 COUPLING (570N) M020-02416 M100M2808 M170N6 M20002808 M200R