DW-12-20-G-D-310 DW-12-20-G-D-400 DW-12-20-G-D-450 DW-12-20-G-D-600 DW-12-20-G-D-750 DW-12-20-G-D-770 DW-12-20-G-D-780 DW-12-20-G-D-790 DW-12-20-G-D-796-LL DW-12-20-G-D-830