KYOCERA SCMT170608SMEPR1225 DRV Magic Drill 4-Cutting Edge Positive Rake Indexable Drilling Insert, ANSI Code: SCMT170608SMEPR1225, Square Shape, #170608 Insert, SCMT Insert, 0.2591 in THK, 0.6614 in Inscribed Circle, Manufacturer's Grade: PR1225