The Multi-purpose foot combines a variety of differnet applications in one foot:
Making piping 3-5 mm diameter
Sewing on bought or made piping 3-5 mm diameter
Sewing on Strands of sequins up tp 6 mm diameter (dege or flatlock)
Sewing on strands of beads/pearls up to 5 mm diameter (edge or flatlock)
Sewing on cord up to 5 mm diameter (edge or flatlock)