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: 40mm / 1.57-inchHex Side Width: 5.2mm / 0.2-inchThread Size: M3Total Length: 46mm / 1.81-inchNet Weight: 150gMaterial: BrassColor: Gold TonePackage Content: 30pcs x Hex Standoff Spacer