DW-50-20-T-D-400 DW-50-20-T-D-400-LL DW-50-20-T-D-450 DW-50-20-T-D-776 DW-50-20-T-D-800 DW-50-20-T-D-826 DW-50-20-T-D-845 DW-50-20-T-Q-200 DW-50-20-T-Q-400 DW-50-20-T-Q-450