Yosoo 120pcs m3 male female hex brass spacer standoff screw nut bolt motherboard assortment kit DIMENSION: M3 Metric, applies to many area, appropriate to meet you different needs COLOR: Brass and Silver, the plastic box is durable in any way, all the parts are in their individual compartments MATERIAL: Brass, Stainless Steel Compact and Portable 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 CUSTOMER SERVICE : Any question, huhushop will try best to satisfy you. Enjoy free return and money back within 6 months