Turn your Dremel rotary tool into a cutting machine with the 420 Dremel Cut-Off Wheels. Good for slicing making straight cuts and slots in all kinds of metal like hardened steel sheets metal or aluminum. The cut-off wheels feature a 15/16 In. (23.8 mm) wheel diameter and 0.04 In. (1.0 mm) thick blade making it ideal to cut groove and trim a variety of metals thin wood or plastics; can also be used to make slots in rusted or stripped bolts and screws. For use with the 402 mandrel only. Pack of 20 wheels.