Heavy Hitters DuraFlex™ B400+ 400A MIG Gun The Heavy Hitters DuraFlex™ B400+ MIG Gun is built for dependable MIG welding performance in the shop or field. The rear-end connection is compatible with Miller™ feeders, making it an easy choice for a wide range of welding setups. The DuraFlex™ B400+ combines a flexible gooseneck, durable front-end components, and Heavy Hitters’ MIGRAP cable protection to help keep your gun protected from everyday jobsite abuse. Features: 400 Amp MIG gun Compatible with Miller™ feeders Flexible gooseneck installed Heavy-duty Bernard™-compatible front-end consumables MIGRAP pre-installed to help protect the cable Multiple wire-size and cable-length options Built for shop and field use Take MIG to the next level with Heavy Hitters DuraFlex™.