Engineered for efficiency and durability, the Weldmark WMK22 Copper Slip-On Connection Bottleneck MIG Nozzle is designed for medium duty welding applications, accommodating up to 250 amperes. This nozzle features a 5/8" bore and a unique bottleneck shape, ensuring optimal performance while providing a snug fit for various Weldmark and WeldSkill MIG gun series. Crafted from high-quality copper, it offers superior heat dissipation and reliability, making it an ideal choice for professionals who demand consistent results in their welding tasks. Each package contains two nozzles, making it a practical addition to your welding toolkit, whether you're tackling light or medium duty projects.