The XA model was designed at the request of sign installers, municipalities, and rental houses. The XA model is the Multi Pro with the extended anvil and longer Chuck-Lok already installed. This makes it truly a 4 bolt change to switch to channel posts, square tubes, and back to rounds. The XA weighs in only 7lbs heavier than the standard Multi Pro and is primarily designed for higher productivity and U-channel sign installers. With carrying case