“SPIDER COUPLING MODEL: GR-19. DETAIL : D = 40 MM, D = 18 MM, H1 = 14.5 MM, H2 = 12 MM, AND 6 Foot. (GR-19) . MODEL: GR-19. DETAIL : D = 40 MM, D = 18 MM, H1 = 14.5 MM, H2 = 12 MM, AND 6 Foot. Buhler Machinery (Shanghai).NA.NA