For sale is a Pack of 10, North American Carbide Inserts, No. SEGB-422A/54.  The inserts are new and unused and come in the original factory plastic case although the case is not sealed.  These inserts were bought at auction as a part of a large lot of excess carbide from a machine shop that was going out of business.  They are New-Old-Stock.  The inserts will be shipped promptly from Missouri.  Thanks for looking.