This tool can be used to remove water and air bubbles from carbon fiber films and window films. It can also be used to remove water after cleaning glass surfaces. It has a soft side and a hard side, allowing you to choose the appropriate side for the task. The soft side on the long edge is for removing water, and the hard side on the short edge is for finishing. The grip is designed to be non-slip. ● Key Point! Made of rubber, so it's less likely to scratch stickers and films!