The product is a set of 50 1" 3M Scotch-Brite Roloc TR Surface Conditioning Abrasive Discs in a coarse grade. These discs are designed for use in metalworking and feature a TR Roll-On/Off ROLOC disc attachment system for easy and quick changes. Made by the reputable brand 3M in the United States, these discs provide high-quality sanding and conditioning for various surfaces. Suitable for a variety of industrial applications, these coarse brown discs offer efficient and effective surface conditioning.