1. Including: 24PCSx40Grit+1/4 inch bracket. Can be changed quickly. 2. High Quality: Made of durable hard zirconia alumina material. Good wear resistance, faster cutting speed and longer service life. 3. The disc adopts a torque spiral design, which can be quickly replaced by rotating, disassembling or connecting. It firmly connects the grinding table to the bracket or bowl to ensure that the grinding table can work stably even at high speed. 4. Wide Application: Ideal for grinding, blending, sanding and finishing various materials such as rust, paint, ferrous metals, stainless steel and non-ferrous metals, wood and plastics. 5. Compatibility: Each flap disc is compatible with most 2 inch drills, die grinders, wind grinders and other power tools, such as: E.g. Ingersoll Rand 301B, Ingersoll Rand 3101G etc. Up to a speed of 12,000 to 14,000 rpm.