Material and feature: PP bristle is flocked into the pedestal to form a brush head. PP bristle is strongly flexible and not easy to get deformed when in use. The bristle of this type of flocking brush is longer than that of the curly bristle brush, which can penetrate into deeper tiny fissures to remove stubborn stains. The aluminum tube can be freely stretched, which can clean those stains in higher place. PP handle at the bottom of the aluminum tube is easy to be held by hands. There’s a hole for hanging. It’s easily dried and kept for repeated use.