Knitters Pride Zing Interchangeable Deluxe circular needle set. This package contains one 7x5. 5x1 inch red & navy striped fabric case containing a set of 9 interchangeable needles with 4 cords, 4 cord keys, 8 end caps, and 1 set of cord connectors. Sizes: 4/3. 5mm; 5/3. 75; 6/4mm; 7/4. 5mm; 8/5mm; 9/5. 5mm; 10/6mm; 10. 5/6. 5mm; 11/8mm. Cords: 1 each of 24 & 40 inches and 2 each of 32.