1.50Mm Width, 4.0Mm Min Bore, Guhring Lh Straight Groove I.D. System 104 Insert, 22Mm Reach, Uncoated 1.50Mm Width, 1.00Mm Depth, 22Mm Reach Ge104.0150.000.22.40.L, Uncoated Type Ge104 Guhring Micro-Precision System 104 Carbide Stick Insert With 4Mm Quick Change Shank For Internal Grooving Straight Slots. Guhring Series No. 25131 Order Code 4.026 Made In Germany, Guhring Part #9251310040260 Guhring Inc.