Features COPPER MATERIAL: Our contact tip of the argon arc welding gun is made of premium copper, which has a long service life and ensures good product performance. FINE WORKMANSHIP: Well crafted in standard size and fine threads, these contact tips ensure a tight fit with your welding torch. 40PCS: There are 40 pieces contact tips in the package of 4 different sizes 0.6MM to 1.0MM that you can use them respectively to meet your different needs. IDEAL REPLACEMENT: Our contact tip has a hard texture, can resist high temperature and corrosion, is easy to replace, and is a perfect substitute. Mig welding technique is suitable for Mig welding guns. EASY STORING: Small size, easy to carry and store, convenient to use and with good performance. Specification: Item Type: Contact Tip Material: Copper 10 x Contact Tip 0.6MM 10 x Contact Tip 0.8MM 10 x Contact Tip 0.9MM 10 x Contact Tip 1.0MM Applied to the 15AK tungsten argon arc welding torch series Package List:10 x Contact Tip 0.6MM 10 x Contact Tip 0.8MM 10 x Contact Tip 0.9MM 10 x Contact Tip 1.0MM  Package List 10 x Contact Tip 0.6MM 10 x Contact Tip 0.8MM 10 x Contact Tip 0.9MM 10 x Contact Tip 1.0MM