Solvent resistant mini roller core.Fast work in small areas, very roller suitable for hard to reach places. Roller brush repairs corners,suitable for using more paint or latex to make the paint smooth and flat. Smooth surface design is perfect for eliminatiing all track lines and leaving smooth surfaces for your wall. Great for any users, it is very easy to operate or use without other peoples help. Perfect for painting your doors, windows, chair rails, baseboards and small projects. Specification: Material: Plastic,Spun Cotton Size Chart: Size: 10x3.5x1.2CM/3.93x1.37x0.47inch Package Includes: 30 Pieces Paint Roller Covers Note: Color might be slightly different due to the color calibration of each individual monitor. Please allow slightly measuring deviation due to manual measurement.