M3 Nylon Hex Spacers Screw Nut Assortment Kit Stand-off Plastic Accessories Set Spacers Male-Female M320mm+6mm 10pcs Spacers Male-Female M312mm+6mm 10pcs Spacers Male-Female M36mm+6mm 10pcs Nuts: M3 50pcs  Screws: M310mm 50pcs Spacers Female-Female M320mm 10pcs Spacers Female-Female M312mm 10pcs Spacers Female-Female M36mm 10pcs