General description The 531 Pcs Grinding Drum Set is designed for use with rotary tools, featuring a variety of polishing drums and grinding wheels. This comprehensive set includes multiple grit sizes to cater to different sanding needs, ensuring efficient and effective material removal. Technical specifications Frosted belt sizes: 1/2 inch, 3/8 inch, and 1/4 inch Drum core sizes: 1/2 inch, 3/8 inch, and 1/4 inch Material: Alumina Color: Reddish brown Package contents include: 24 x 1/2 inch sanding drum (80 grit) 24 x 3/8 inch grinding wheels (80 grit) 24 x 1/4 inch grinding wheel (80 grit) 24 x 1/2 inch sanding drum (120 grit) 24 x 3/8 inch grinding wheel (120 grit) 24 x 1/4 inch grinding wheels (120 grit) 24 x 1/2 inch sanding drum (150 grit) 24 x 3/8 inch grinding wheels (150 grit) 24 x 1/4 inch grinding wheel (150 grit) 24 x 1/2 inch sanding drum (240 grit) 24 x 3/8 inch grinding wheels (240 grit) 24 x 1/4 inch grinding wheels (240 grit) 24 x 1/2 inch sanding drum (320 grit) 24 x