M2/M2.5 X .40-.45Mm Pitch Partial Profile Guhring I.D. Thread Lh System 104 Insert, 7Mm Reach, Tin Coated M2.0/M2.5, 0.40-0.45Mm Pitch, 7Mm Reach Gg104.Tm02.040.07.15.L, Tin Coated Type Gg104 Guhring Micro-Precision System 104 Carbide Stick Insert With 4Mm Quick Change Shank For Partial Profile Metric Threads. Guhring Series No. 25149 Order Code 4.002 Made In Germany, Guhring Part #9251490040020 Guhring Inc.