Features Good Thermal and Electrical Conductivity: These contact tips made from copper can provide good thermal and electrical conductivity to allow consistent current transfer to the wire. More Stable: The copper contact tip also feature a smoother center bore, resulting in less friction as the wire feeds through, resulting in a consistent wire feeding with less drag. ood Replacemnet: The welding contact tips are easy to snap into place, perfect match and Good Choice for Direct replacement of original parts. Long Service Life: The mig welder contact tips are resistant to high temperature and corrosion, sturdy with long service life Perfect Application: These copper contact tips are fit for15AK MIG welding torch. Specification: Material: Red copper Optional size: 0.8mm, 1.0mm Quantity: 20Pcs Total length: 2.3cm / 0.9in Package weight: Approx. 139g / 3.3oz Package list: 20 * Copper Contact Tips Package List