DW-50-20-F-D-855 DW-50-20-F-D-860 DW-50-20-F-D-865 DW-50-20-F-D-880 DW-50-20-F-Q-200 DW-50-20-F-Q-400 DW-50-20-F-Q-450 DW-50-20-F-S-780 DW-50-20-F-S-785 DW-50-20-F-S-790