Black Flame Tip 240 Grit
3/32 inch shank
Made in Germany, the diamond dust in this tool is set in soft silicone, rather than in hard rubber.
240 grit is harsh and not suggested for coins. But this tool is our first choice when it comes to cleaning encrusted artifacts. It is also the best tool for 1st Stage cleaning of 'zapped' artifacts. The sharp and moveable silicone tip is the key.
Like all of our DD Dremel tools, this works best under running water. Remember to use nearly zero pressure. Go slow and in circular motions as often as possible and at the lowest RPMs.