1.17Mm Width, 4.0Mm Min Bore, Guhring Lh Full Radius I.D. Groove System 104 Insert, 22Mm Reach, Uncoated 1.17Mm Width, 1.00Mm Depth, 22Mm Reach Ge104.0117.058.22.40.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 4.012 Made In Germany, Guhring Part #9251390040120 Guhring Inc.