Feature:1. Ideal for cleaning bottles, flutes, vases, sinks and drainage systems.2. All brushes have an easy-to-use ring at the end of the handle that can be hung up when not in use or reattached to the key fob for safety.3. Laboratory supplies cleaning tool for cleaning glass test tubes.4. The brush head is made of high quality bristle, which has a good cleaning effect.5. Ergonomically designed handle for easy work and comfortable handfeel.Spec:Condition: 100% Brand NewItem Type: Test Tube Cleaning BrushMaterial: BristleOptional Size: Large, Medium, SmallQuantity: 10PCS Package List:10 x Cleaning Brush