Chicago rivets screws set kit include 9 different sizes nut and one size screw: 5 6mm(0.24"), 5 8mm(0.32"), 5 10mm(0.39"), 5 12mm(0.47"), 5 15mm(0.59"), 5 18mm(0.71"), 5 20mm(0.79"), 5 25mm(1"), 5 30mm(1.18"), 10pcs for each size; M4 4mm(0.16") of screw, 90pcs.
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