Quilters' Resource Coil Pot Cording is the ideal cord for creating Coil Pots! As called for in the book " Textile Coil Pots and Baskets" this cord creates the core of the coil. This firm but flexible cord is made of plastic, it is a twisted rope type cord that is easy to use! It is thin enough to fit under the foot of the machine, yet rigid enough so that your pots will be well-formed and robust. 31 yards- 4 mm thick, this package has enough to create one pot approximately 10"x 6 1/2" in size. 31 yards- 4 mm thick