The little things — bags, cuffs, wands, literature — are easy to substitute and easy to get wrong. A cheaper bag that tears earlier, a wand that's slightly off dimensions, a manual that's for a different machine model. Small mismatches, but they add up.
This is the genuine Nilfisk Advance OEM 01720009 SKYVAC SVX6 POLE BAG (ATEX), part number 1720009, brand new in the box. Fits right, works right, holds up to real use.
Not sure this is the right consumable for your machine? Send us the model and serial and we'll confirm.