1.5Mm Width Guhring Straight Face Groove Lh System 104 Insert, 3.0Mm Depth, 17Mm Reach, Nano-A Coated 1.5Mm Width, 3.0Mm Depth, 17Mm Reach Ga104.0150.005.17.40.L, Nano-A Coated Type Ga104 Guhring Micro-Precision System 104 Carbide Stick Straight Face Grooving Insert, 4Mm Minimum Circle Diameter. Guhring Series No. 25191 Order Code 4.004 Made In Germany, Guhring Part #9251910040040 Guhring Inc.