1. Made of good quality material, durable enough.The brush is used to clean sprockets, derailleurs, cranks, and pedals. 2. The scraper can remove dust, mud, etc., and helps clean dust in narrow gaps.Makes cleaning work easier and quicker and a great aid for bicycle maintenance. 3. Small and easy to carry, the chain collects a lot of dirt during long periods of cycling.It is necessary to clean it regularly in order to use it for a long time. 4. Two piece set, each has its own unique features, allowing you to perfectly clean bike chains for motorcycle owners.