Function: The portable filter brush can quickly clean the dirt in the filter element. And with the rotary knob, users can conveniently adjust the water flow rate. This spa and hot tub filter cleaning device is the ultimate maintenance accessory. Extends the life of pool or hot tub filters and equipment. Dimensions: The portable pool cleaning brush measures only 22 x 10 x 5 cm, is compact and lightweight, easy to carry, and doesn't take up much space. Adjustable: The pool filter brush fits standard garden hoses and can be connected to the water line. And there is a rotary knob for adjusting the water flow rate. Practical: Our pool filter cleaner can easily remove deposits and dirt to ensure clean water flow. Removes dirt from the filter within seconds. Designed to be compatible with most standard hot tub, spa, and swimming pool filters (except filters). Product Description Bestine. Bestine Europe mainly sells daily household products, kitchen supplies, pet supplies, plastic products,