2.0Mm Min Bore Guhring Bore/Profie Lh Wiper System 104 Insert, 0.15Mm (T-Max) Offset, 17Mm Reach, Uncoated Left Hand, 0.10Mm Radius, Bright Uncoated Gj104.2319.010.17.20.L, Uncoated Type Gj104 Guhring Micro-Precision System 104 Carbide Stick Insert With 4Mm Quick Change Shank For Boring & Profiling With Wiper Geometry. Guhring Series No. 25097 Order Code 4.004 Made In Germany, Guhring Part #9250970040040 Guhring Inc.