20PCS M2 M2.2 M2.5 M3 M3.5 M4 M5 Grade 12.9 CNC Tool Screw Insert Torx Screw Replaces Carbide Turning Inserts Lathe Accessories

20PCS M2 M2.2 M2.5 M3 M3.5 M4 M5 Grade 12.9 CNC Tool Screw Insert Torx Screw Replaces Carbide Turning Inserts Lathe Accessories

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