Description:Brass material, male female type threaded, and it is perfect for mounting between PCB circuit boards and machine boards.specifications:Product Name: Hex Standoff SpacerMale Thread Length: 6mm / 0.24-inchFemale Thread Length: 45mm / 1.77-inchHex Side Width: 5.2mm / 0.2-inchThread Size: M3Total Length: 51mm / 2-inchNet Weight: 197gMaterial: BrassColor: Gold TonePackage Content: 34pcs x Hex Standoff Spacer