Bissell HydroSteam 3998 brush roll for CrossWave Cordless Max, CrossWave X7

Bissell HydroSteam 3998 — wet & dry floor washer brush roll for the CrossWave Cordless Max, CrossWave X7. The roll in a wet floor washer mops and sweeps at once, so it wears out faster than anything else on the machine: it is permanently wet and permanently rubbing against the floor. Judge it by the pile — a matted roll returns less water to the tank and leaves a wet trail behind that dries into streaks.