Many 50 lb flour product descriptions list the country of origin as the USA.
Descriptions include coarse grinds for semolina/pasta and a fine texture for white and all-purpose flours.
Common details note the product as a powdered flour, a net weight of 50 lb (800 ounces), and a package quantity of 1.
Pastry-style whole-wheat flours in the 50 lb range are described as lower in protein to yield tender, crumbly pastries; some all-purpose options are noted as having moderate protein.
Protein levels vary by use: many 50 lb flours are labeled high-protein for bread, bagels, and pizza; pastry flours are lower in protein; and some all-purpose flours are described as moderate in protein.
Special formulations include malted flours made with organic malted barley, semolina made from durum wheat for pasta, and some bags labeled as iron-fortified.