Advantages:
Can accommodate extremely large angular misalignments
Can accommodate extremely large radial misalignments, when used in pairs
Disavantages:
Does not transmit rotation homokinetically (so that the two shafts rotate at exactly the same speed throughout rotation), unless used in pairs, in a specific arrangement
Typical Applications:
Can be used as a linkage, or transmission, between two intentionally misaligned shafts, rather than just as a flexible coupling (meant to accommodate very small misalignment that inevitably but unintentionally results from tiny mounting errors and thermal growth.) Lawn and garden equipment, conveyors and material handling equipment, food processing equipment