Blovess Flexible Tube Cleaning Brush, Nylon Long Brush, Hoses Bent Pipe Cleaning Brush, Aquarium Water Filter Pipe Air Tube Brush Flexible and bendable long brush with loop Bristle diameter: 2cm, length: 7.5cm Overall length: approx 160cm (include the ring and brush) Nylon brush and stainless steel wire Perfect for cleaning the interior of assorted hoses, especially useful for bent pipes, like U-shape tube