General description 100Pcs Radial Bristle Disc Kit is designed for detail polishing and metalworking. This kit includes a variety of sanding discs with different grits, making it suitable for various applications. Technical specifications Type: Sanding Disc Grit: 80#, 120#, 220#, 400#, 600#, 1000#, 2500# Shank Diameter: 3mm (1/8 inch) Bristle Disc Diameter: 1 inch (25mm) Material: Nylon + Metal Package Contents: 84 Radial Bristle Discs, 16 Shanks Measurement Error: +/- 1-3 cm