Quantity: one piece Color: blue black Product size: refer to the picture Function: The portable filter brush can quickly clean the dirt inside the filter element. The knob is convenient for users to adjust the water volume. This spa and hot tub filter cleaning tool is the ultimate maintenance accessory. Extend the life of your pool or spa filters and equipment. Size: Small and lightweight, easy to carry without taking up too much space. Adjustable: The pool filter brushes fit standard garden hoses and can be attached to water pipes. And there is a knob to adjust the water flow size. Convenient: Our pool filter cleaner easily removes debris and grime for a clean water flow. Remove debris from the filter in seconds. Designed to be compatible with most standard filters for hot tubs, spas, and pools (filters not included).