Dremel 932 Aluminium Oxide Grinding Stone The product is 3/8x1/2 Grinder A high-quality industrial abrasive made for extended use features a 1/8" shank, and is ideal for sharpening, deburring and general purpose grinding Tough enough to smooth out most materials&#8212; including stainless steel Specially designed to grind flat and slotted surfaces Can be cleaned and restored to its original shape after extended use, longer tool life, and more efficient grinding