Versatile Cleaning Applications: Whether you're painting intricate details, applying sealants in small areas, or cleaning delicate surfaces like glass or ceramic, these brushes are up to the task. Their versatility makes them suitable for a wide range of DIY, craft, and household cleaning projects. Compact 4 - Inch Design: These 4 - inch mini roller brushes and 4 - inch sponge little finger brushes are perfectly sized for reaching tight corners and hard - to - access areas. Their compact shape enables detailed cleaning in small spaces, making them ideal for projects where precision matters. Efficient Cleaning Performance: The unique design of the sponge little finger brushes allows for excellent absorption and distribution of cleaning solutions, ensuring thorough cleaning. The mini roller brushes, on the other hand, provide an even application of paint or other substances, resulting in a smooth finish. High - Quality Materials: The roller brushes are made with durable bristles that can withstand tough scrubbing, while the 10 included sponge little finger brushes are crafted from soft, yet resilient sponge material. This ensures long - lasting performance and effective cleaning without scratching surfaces. Tips: Due to technical reasons, if the roller you receive is difficult to roll, please leave a space of about 0.5-1 between the end of the roller and the bent rod to improve its rolling