721D XTThe 721D XT, a 170-hp (net) tool-carrier is rated to handle a standard 3-cubic-yard bucket. It is the largest of the three Case models now available. The latest tool-carrier incorporates new features, which also have been incorporated into the rest of the line. Those new items include redesigned loader-arm linkage, "reduced- profile" counterweight that fits within its standard turning radius, and redesign of the attachment area to improve visibility.