DW-20-12-S-Q-400 DW-20-12-S-Q-450 DW-20-12-S-S-640 DW-20-12-S-T-200 DW-20-12-S-T-400 DW-20-12-S-T-450 DW-20-12-T-D-200 DW-20-12-T-D-390 DW-20-12-T-D-400 DW-20-12-T-D-450