You need any flux powder, direct Very convenient and easy to weld.Suitable for the full welding of the main welding operator, a small heating device, the of the welding seam after welding is generally more than the of the main metal.Hot staples are designed to bond cracked areas where strength is added.Its welding effect is good with low melting point, good fluidity, hardness and toughness, good sealing.For use with Hot Stapler to repair most plastic materials such as ABS PVC Nylon, etc.Diameter: 06 mmColour: silverMaterial: metalPackage Contents:100 * Hot Stapler StaplesOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.