KYOCERA SCMT070305GMECA520D DRV Magic Drill 4-Cutting Edge Outboard Positive Rake Indexable Drilling Insert, ANSI Code: SCMT070305GMECA520D, Square Shape, #070305 Insert, SCMT Insert, 0.126 in THK, 0.3012 in Inscribed Circle, Manufacturer's Grade: CA520D