De Vlijt is what the Dutch describe as an "achtkante stellingmolen". It is a smock mill with a stage. It has four-storey brick base and the stage is at third-floor level, above ground level. The mill is winded by tailpole and winch. The four common sails have a span of. The cast-iron windshaft was made by Fabrikaat Gieterij Hardinxveld in 2001. The mill has no internal gears or machinery.