10pcs/lot M2 M2.6 M3 M3.5 M4 M5 M6 Hex Hexagon Socket Cap Head Self Tapping Screw 8.8 Gradese Black Carbon Steel Allen Head Scre

10pcs/lot M2 M2.6 M3 M3.5 M4 M5 M6 Hex Hexagon Socket Cap Head Self Tapping Screw 8.8 Gradese Black Carbon Steel Allen Head Scre

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