Case 621G, 721G Tier 4B (final) Wheel Loaders description of the catalogue:

Case Wheel Loaders 621G, 721G Tier 4B technical handbook

621G WHEEL LOADER XR-EH, NEW CAB TIER4B NA,
621G WHEEL LOADER XT-EH, NEW CAB TIER4B NA,
621G WHEEL LOADER ZBAR-EH, NEW CAB TIER4B NA,
721G WHEEL LOADER XR-EH, NEW CAB TIER4B NA,
721G WHEEL LOADER XT-EH, NEW CAB TIER4B NA,
721G WHEEL LOADER ZBAR-EH, NEW CAB TIER4B NA