100pcs Brass Insert Nuts M3*3/4/5/6/8/10mm OD=4.2 or 5.3mm Knurled Brass Inserts Nuts Copper Nuts

100pcs Brass Insert Nuts M3*3/4/5/6/8/10mm OD=4.2 or 5.3mm Knurled Brass Inserts Nuts Copper Nuts

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