M4.0 X 0.70Mm Pitch Full Profile Guhring I.D. Thread Lh System 104 Insert, 17Mm Reach, Tin Coated M4.0, 0.70Mm Pitch, 17Mm Reach Gg104.Vm04.070.17.31.L, Tin Coated Type Gg104 Guhring Micro-Precision System 104 Carbide Stick Insert With 4Mm Quick Change Shank For Full Profile Metric Threads. Guhring Series No. 25165 Order Code 4.009 Made In Germany, Guhring Part #9251650040090 Guhring Inc.