0.80Mm Width, 3.0Mm Min Bore, Guhring Lh Full Radius I.D. Groove System 104 Insert, 22Mm Reach, Uncoated 0.80Mm Width, 0.70Mm Depth, 22Mm Reach Ge104.0080.040.22.30.L, Uncoated Type Ge104 Guhring Micro-Precision System 104 Carbide Stick Insert With 4Mm Quick Change Shank For Internal Grooving Full Radius Slots. Guhring Series No. 25139 Order Code 4.004 Made In Germany, Guhring Part #9251390040040 Guhring Inc.