320PCS M4 Male Female Nylon Hex Spacer Standoff Screw Nut Threaded Pillar PCB Motherboard Assortment Kit (Black) | M4 Black color total 320 pieces. Come with the plastic box. High quality. | All products are made of durable nylon, Strong, anticorrosive. Appropriate to meet you different needs | Easy to install: the standoff kit is very useful small tools, they are very easy to install, and bring a lot of convenience to your life | Package includes: 320 pieces M4 standoff kit, the plastic box is durable in any way, all the parts are in their individual compartments