ITEM NAME:Boxed M3 Stainless Steel Screw Nut Brass Hexagonal Copper Column Isolation T3M7 Boxed M3 Stainless Steel Screw Nut Brass Hexagonal Copper Column Isolation T3M7 Diameter 6mm 10mm 15mm 20mm Color: yellow Material: brass Kit list: Direct: M3, 6mm, 10pcs Direct: M3, 10mm, 10pcs Direct: M3, 15mm, 10pcs Direct: M3, 20mm, 10pcs Copper column: M3, 6mm+6mm, 10pcs Copper column: M3, 10mm+6mm, 10pcs Copper column: M3, 15mm+6mm, 10pcs Copper column: M3, 20mm+6mm, 10pcs Nut: M3, 20pcs Screw: M3 x 6mm, 20pcs Package Contents: 120pcs M3 copper column screw