Prepworks From Progressive ProKeepers Ultimate Keeper 8 Piece Set PKS-100 FLOUR PROKEEPER 4 qt (3.7 L) capacity Holds up to 5 lbs of flour PKS-200 BROWN SUGAR PROKEEPER 1.5 qt (1.4 L) capacity Holds a standard 2 lb bag of brown sugar PKS-300 POWDERED SUGAR PROKEEPER 1.4 qt (1.3 L) capacity Holds a standard 1 lb bag PKS-400 MINI PROKEEPER Approximate 1.5 cup (354 ml) capacity PKS-500 SUGAR PROKEEPER-2.5 qt (2.2 L) capacity