This product is a cleaning tool designed for 1-2 HP air conditioners. It includes a cleaning bag to catch debris and prevent mess during the cleaning process. It is suitable for cleaning fungus, dirt, and other build-up inside air conditioners. The set may be used in conjunction with freeze clean spray (not included) for a more thorough clean. The '冷气清洗罩' part translates to 'air conditioner cleaning cover', further emphasizing the bag's primary function.