Subclasses with single bottom feed dog transport:
DL7200-BM1-16 – designed for light and medium materials
DL7200-BH1-16 – designed for medium and heavy materials
DL7200-BX2-16 – with a large hook designed for heavy materials
Subclasses with double needle and feed dog transport:
DL7200-NM1-16 – designed for light and medium materials
DL7200-NH1-16 – designed for medium and heavy materials