The Gyros 7 Piece Cut-Off Wheels Fiber Disk ProPak kits have been designed to work in conjunction with Dremel type motor tools and with our GyrosGuard Safety Shields. These kits provide you with all three formulations of our Fiber Disks in an array of sizes - all in one convenient package. The multi-purpose combinations, provide quick and easy choices with proven performance. For your safety and protection, NEVER operate a rotary tool without the GyrosGuard Safety Shield when using cutting accessories.