DW-50-20-F-S-835 DW-50-20-F-S-840 DW-50-20-F-S-845 DW-50-20-F-S-850 DW-50-20-F-S-853 DW-50-20-F-S-855 DW-50-20-F-S-860 DW-50-20-F-S-865 DW-50-20-F-T-1000 DW-50-20-F-T-200