Material：Made of high-quality nylon, the bristles are soft, do not hair and have an excellent cleaning effect. The brush tube is made of excellent stainless steel, which is durable and does not rust. Easy to use: 360° rotating cleaning brush with round head, can be easily bent to get into filter hoses and remove dirt deposits and even algae. Double brush head design: the tube brush is equipped with two ends to make cleaning curved pipes and U-shaped pipes easier. It is very soft to use as you like. Size：Total length: 155 cm. Brush head size: large brush 30 mm diameter x 40 mm long. Small brush 16 mm diameter x 40 mm long. Package Contents: 2 pieces, yellow and blue