Fan Disc Set: Set of 18 fan discs (60/80120/grit). Coarse to fine grinding heads for everyday use. Wheel sizes: Ø40mmX25mmX6mm, Ø30mmX25mmX6mm, Ø25mmX25mmX6mm, 6pcs per size. Compatible with Power Tools: for use with power tools with Ø6mm shank. Works with rotary tools for deburring, polishing and grinding rough surfaces on metal or other materials. High Quality Material: Made of high performance aluminum oxide particles, sharp grinding wheels, high grinding pressure and high productivity. Fast material removal Wide range of applications: For cleaning welds and cuts in iron, stainless steel and metal alloys, easier and more convenient for polishing and grinding metal, wood and stone, suitable for studio or home use.