Can you get ahold of the package the inserts came in? IF it's a standard configuration, it should have a base number to go by. More than likely this is made special just for the process being used for. If so, the carbide supplier is making a killing off of each insert being sold to your company. If you're just wanting this for your own use, take an old one and resharpen the top of the insert and hone to your needs. If I had to guess, they probably run the insert until it craters! Beyond repair.