[Provide Good Thermal And Electrical Conductivity]: These high-quality contact tips made from copper can provide good thermal and electrical conductivity to allow consistent current transfer to the wire [More Stable]: They also feature a smoother center bore, resulting in less friction as the wire feeds through, resulting in a consistent wire feeding with less drag [Good Choice To Replace The Original Parts]: Pretty easy to snap into place, perfect match and Good Choice for Direct replacement of original parts [Long Service Life]: Resistant to high temperature and corrosion, sturdy with long service life; Fit for Binzel 15AK MIG welding torch [100% absolutely satisfactory guarantee]: If you have any problems or suggestions about this product, please feel to contact us by email; We will surely give you a satisfactory solution and never let you suffer losses, Manufacturer: Yosoo Health Gear