Dremel 84922 Silicon Carbide Grinding Stone 4.8mm (3 Pcs) Tougher than aluminum oxide points, these are made especially for use on hard... Add to cart. View. $6.90. Dremel 85422 Silicon Carbide Grinding Stone 19.8mm. Tougher than aluminum oxide points, these are made especially for use on hard... Add to cart. View.
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