Materials The auto sunroof drain cleaning tool is constructed with POM plastic, steel wire, and nylon. POM plastic is a synthetic resin which is exceptional hardness, rigidity, and wear resistance. The steel wire is pressure-resistant, wear-resistant, non-brittle, and does not easily age. The soft nylon bristles are resistant to breakage, ensuring a gentle yet effective cleaning process. This makes the cleaning water brush reusable for the long term. Flexible and Long EnoughThis car drain hole cleaner is long enough, and can easily pass through long, narrow pipes. It can help you clean car sunroofs, fuel tank drain holes, door drain holes, etc. more quickly and safely, helping you remove the dirt. Nylon Rotating Bristles One end of this sunroof drain cleaning brush is the tubular-shaped brush, well made of nylon rotating bristles, soft and anti-scratch. Helps you gently remove the leaves, dirt, cobwebs, and debris, and can be reused for the long term. It helps you clean stains seamlessly and protect your car scratch-free. Practical Hand Ring DesignThe other end of this hose pipe brush is a hand ring, designed for easy extraction. The handle is smooth, not rusty, and more durable. You don't need to worry about the pipe cleaner brush falling into the hose and not being taken out, more convenient for holding. The hand rings color sent randomly. Wide ApplicationThis flexible drain hole brush is perfect for a car sunroof, auto wiper, fuel tank drain hole, car door drain hole, skylight drain pipe, and so on. Also ideal for refrigerator drain cleaning, fish tank cleaning, hose or glass tube cleaning, water pump accessories cleaning, filter systems cleaning, etc. Perfect solution for dripping and clogging problems.