The 3M 36211 321U Series PSA Stikit 400 Grit 6 in. Sanding Disc Roll is a high-quality product with 100 discs featuring a 400 grit blue color. Designed for dry sanding applications, this roll of sanding discs is perfect for automotive tools and supplies, shop equipment, and shop supplies. The 6-inch size allows for easy handling and efficient sanding, making it a convenient and useful addition to any workshop or garage.