Brushtech Super Sturdy 2-in-1 Grout Cleaning Brush is designed with two sides to tackle different grout widths effectively. The smaller side is for thin grouts, while the larger side handles thicker grouts with ease. Its angled design keeps your hands safely away from the tiles, preventing injuries to your knuckles no matter which side you use. This brush excels at removing soap scum, mildew, and dirt, making it an essential tool for achieving a thoroughly clean surface. It is especially useful for preparing a spotless base before applying grout whitener, ensuring results for your grout restoration projects.