100+2 Cut Off Wheels Disc Dremel 409 Rotary 15/16" Rotary Tool Mandrel 401 1/8" Suit for Dremel 3000 4000 8220-2/28 395 7700-1/15 4000 3/34 Chicago Electric, Milwaukeen Nextec 1/8" Shank Hobbyy Clean Polish Pack of 100 15/16" Cut Off Wheel Disc Size: 15/16" " (31.8mm) in dia, 0.025" in thickness Cuts only along its edge Arbor hole is 1/16" Fit in Dremel #402 , Manufacturer: N/A This wheels is non Dremel brand.