Haobase 300pcs M2 M3 Male Female Nylon Hex Spacer Standoff Screw Nut Assortment Kit Multifunction: The Assortment Come with Screw, Nut, Stand-off, applies to many area. Premium Quality: All products are made of durable nylon, Strong, anticorrosive, compact and portable 120pcs White M2 Nylon Screw Nut Assortment, 180pcs Black M3 Nylon Screw Nut Assortment