DW-50-19-T-T-450 DW-50-20-F-D-1000 DW-50-20-F-D-200 DW-50-20-F-D-300 DW-50-20-F-D-400 DW-50-20-F-D-450 DW-50-20-F-D-693 DW-50-20-F-D-760 DW-50-20-F-D-780 DW-50-20-F-D-785