So that there are a big chance for you to find various size you need for your projects. M8 x 8mm 20pcs. M3 x 3mm 20pcs. M3 x 4mm 20pcs. M3 x 6mm 20pcs. What you will get: In this kit, we have prepared a variety of materials (304 Stainless steel，316 Stainless steel), various sizes of hexagon socket drive cup set screws for you.
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