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5-50pcs M3 M4 M5 M6 M8 M10 M12 Zinc-plated Carbon Steel Square Nuts DIN557 GB39
5-50pcs M3 M4 M5 M6 M8 M10 M12 Zinc-plated Carbon Steel Square Nuts DIN557 GB39
https://www.bizrate.co.uk/homehardware/5-50pcs-m3-m4-m5-m6-oid26121401908.html