Items - PERFORATED CENTRE TUBE (SPIRAL TYPE) TO MANUFACTURE LOW MEAN PORE SIZE CONVENSIONAL PRIMARY FUEL OIL FILTER TO RDSO DRG NO. SKDP- 3931,ALT. NIL AND CONFORMING TO RDSO SPEC.NO.MP.0.2600.25, REV.01, JULY, 2021 NOTE:ALL THE MATERIALS PARTS MUST BE PACKED IN RIGID HARD CARD BOARD CARTON BOXES CONVENIENT TO HANDLE.