General description The 531 Pieces Sanding Drum Set for Dremel Rotary Tools is a comprehensive kit designed for various sanding tasks. It includes 504 sanding bands, 24 drum mandrels, 2 self-tightening chucks, and 1 combination wrench, making it an essential accessory for DIY enthusiasts and professionals alike. This set features a range of sanding grits and sizes, ensuring versatility for different projects. Technical specifications Package includes: 504 sanding bands, 24 drum mandrels, 2 self-tightening chucks, 1 combination wrench (total 531 pieces) Sanding bands sizes: 1/2 inch, 3/8 inch, and 1/4 inch Drum mandrels sizes: 1/2 inch, 3/8 inch, and 1/4 inch Sanding bands material: Aluminum Oxide Grits included: 80, 120, 150, 240, 320, 400, 600 Each grit includes 24 sanding bands for each size Compatibility and accessories Compatible with all standard rotary tools, including Dremel Includes 24 reusable drum mandrels (8 pieces for each size: 1/2", 3/8", and 1/4") 2 self-tightening