They are made of good materials, arc design, which can provide good even paint coverage for . These arc roller are good at spreading oil paint evenly on pipeline's surface. Free motion, easy and convenient for use, suitable for both beginners or professionals. Features -Color: Yellow. -Material: Polyester, Plastic, Iron. -Size: About 30.00X21.00X5.00cm/11.79X8.25X1.97in. -Application: suitable for diameter of 10-20cm . - With them, you won't need to spend much time and money to ask others to decorate your water tube. - This roller brush is manufactured with , special and unique for long time use. - Our paint roller brush is shed resistant and and deliver excellent coverage and a smooth clean finish every time. - For both professional and beginner. These paint roller covers help you paint your tube. - Its smooth surface also helps to distribute the paint evenly. Greatly improve your work efficiency. Package list: 1 roller brush