1.00Mm Width, 4.0Mm Min Bore, Guhring Lh Full Radius I.D. Groove System 104 Insert, 32Mm Reach, Tin Coated 1.00Mm Width, 1.00Mm Depth, 32Mm Reach Ge104.0100.050.32.40.L, Tin Coated Type Ge104 Guhring Micro-Precision System 104 Carbide Stick Insert With 4Mm Quick Change Shank For Internal Grooving Full Radius Slots. Guhring Series No. 25133 Order Code 4.009 Made In Germany, Guhring Part #9251330040090 Guhring Inc.