'Lil Shark has a stylish new design that brings a fresh and fun look to your pool cleaning experience. And it deploys powerful cleaning action against even the toughest grime; its dual band of sturdy nylon bristles actively scrubs away stubborn debris that other cleaners leave behind. 'Lil Shark is built to last, with a rugged housing and only one moving part. It installs in minutes - no special tools or fittings are required. Just attach the hose, place it in the water, and watch it do the work for you automatically.