2mm RADKAR Crochetio Polyester cord. RADKAR Crochetio Polyester cord is an excellent choice for people who are just starting their adventure with handcrafts, as well as for advanced users. This Radkar Crochetio polyester cord can be used to create stylish jewelry or handbags, as well as napkins, pillowcases, curtains, and tablecloths, toys.