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- Jan 20, 2018
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I bought 3 of these in the 8mm diameter just to check them out. At about $5 ea. I figured WTH. They can be held in a 5/16 collet, so no need for a metric collet. After using one for a few days in hardened steel, I ordered more. They are quite sharp and leave a very nice finish.
https://www.aliexpress.us/item/3256805925801828.html
https://www.aliexpress.us/item/3256805925801828.html