Introduction PRODUCT DESCRIPTION Nyalox, the original abrasive nylon bristle brushes have been redesigned to improve performance over a broader range of uses. Nyalox is the only brush line available in three grits and bristle diameters-conveniently color coded for easy identification. NYALOX….The one and only, now 3 times better. Key Features: Maintains shape Will not rust Abrasive grit infused in every bristle Ideal for a variety of uses Last up to (10) times longer that Wire Brushes Convenient Shapes and Sizes for all jobs Gray-Extra CoarseOrange-Coarse and Blue-Fine Will not rust & maintains its shape. Safer to use.