The item is an alternative, not original

Compatibility: this replacement brush set is compatible with Karcher FC3 Cordless, FC3 Cordless Premium, FC5, FC5 Cordless, FC5 Cordless Premium, FC5 Premium, FC7 Cordless, FC7 Cordless Premium.
Microfiber roller: made of microfiber, highly absorbent, durable, and gently but effectively cleans hard floors.
High-absorption roller: ideal for picking up dust, fine debris, and pet hair while controlling water flow. Suitable for all hard floors: parquet, laminate, cork, stone.
Washable and durable: rollers are machine–washable up to 60 °C.
Package includes: 4 microfiber roller brushes. For optimal cleaning performance, replace every 3–6 months.