The 3M ROLOC Abrasive Disc measures 3 inches in diameter and features a 240 grit, ideal for achieving a fine finish on various surfaces. This disc is designed for use in conjunction with 3M's ROLOC attachment system, ensuring quick and easy changes during high-volume applications. Suitable for metalworking, wood finishing, and composite materials, this versatile disc provides consistent results and extended durability, making it an essential tool for professionals focused on quality and efficiency.