Kit with SR 500 fan unit and hood SR 520 M/L. Contains, SR 500 fan unit, SR 520 M/L hood, battery STD, battery charger SR 513, belt SR 508, 2 pcs SR 510 P3 R particle filter, 2 pcs filter adapters, 10 pcs SR 221 pre-filter, 2 pcs pre-filter holder, flow meter, plug kit, cleaning tissue and user manuals.