20x Reinforced Cut Off Wheels Disc 426 Rotary 1-1/4" X 0.045" Fiberglass Rotary Tool Pack of 20 1.25" FiberglassReinforced Wheel Disc Size: 1-1/4" (31.8mm) in dia, 0.45" in thickness Each disc is fiberglass reinforced increase the strength and life Arbor hole is 1/16" Fit in Dremel #402 , Manufacturer: N/A For Dremel 3000 4000 8220-2/28 395 7700-1/15 4000 3/34 Chicago Electric, Milwaukee Nextec 1/8" Shank Hobby Clean Polish