Fangrui Product Details [material]: Made Of Special Plastic Material, The Weight Is Increased To That The Cleaning Head Can Completely Sink To The Bottom For Cleaning.weighted For Easy Underwater Maneuverability.suitable For Swimming Pools, Sauna Pools, Aquariums, Water Parks, Pools, Landscaped Pools, Etc. [flexible]: Small And Flexible Brush With Swivel Joint To Allow Cleaning Of Difficult Corners And Bristles To Remove Stubborn Dirt. [triangular Shape] : Its Triangular Shape Allows Easy Cleaning Of Hard To Reach Corner Areas, Practical To Use.this Weighed Pool Vacuum Head Can Sink Directly Into The Bottom Of The Swimming Pool And Until The Cleaning Is Completed. [universal Installation]: Suction Ports Are Compatible With Standard 1.2inch And 1.5inch Suction Hoses, And The Handle Features A Spring Loaded Locking Clip For Easy Connection To Extension Rods Standard. [soft Brushes]: The Cleaning Is Equipped With Bristles That Are Harder Than Nylon But Softer Than Steel, Providing The Balance For Cleaning The Of Any Type O