120PCS PCB Board Screws Standoffs M3 Male Female Hex Brass Spacer Nut AssortmentDescription: 100% brand new and high quality. Copper and copper alloy material, durable, high quality to create high quality excellent products. The whole product is smooth and comfortable, does not hurt hands, the process is simple and easy to use. Specification: Color: yellow Material: brass Dimension: M3 metric Including: Direct: M3, 6mm,10pcs Direct: M3, 10mm,10pcs Direct: M3, 15mm,10pcs Direct: M3, 20mm,10pcs Copper column: M3, 6mm+6mm,10pcs