Atoplee 5pcs Metric Left Hand Thread Die Wrench Set Hand Machine M3X0.5mm M4X0.7mm M5X0.8mm M6X1.0mm M8X1.25mm Material: alloy steel In diameter * inside diameter:3mmX0.5mm,4mmX0.7mm,5mmX0.8mm,6mmX1.0mm,8mmX1.25mm Specifications:M3*0.5/M4*0.7/M5*0.8/M6*1.0/M8*1.25 Package Included:5 x Metric Thread Die