Originally ordered and arrived in apparent good condition. Placed the end mill bit in my CNC mill and immediately on spin up the bit snapped (before even touching material). As a result I ordered a replacement end mill bit since the first must have been defective. When a replacement one finally arrived (was on backorder) the replacement bit was already broken in its packaging despite being in a proper bit holder.
This is a poor quality product, don't waste your time with it. After returning the first one I found another made by Kyocera that appears to be of superior quality and i have been using it heavily for the last week with no issues. Already ordering more of their end mill bits.