Special interchangeable circular needle set! This package contains one 7x5. 5x1 inch red & blue striped fabric case containing a set of 7 interchangeable needles with 2 cords to make 16 inch needles, 4 end caps, and 2 cord keys. Sizes: 4/3. 5mm; 5/3. 75mm; 6/4mm; 7/4. 5mm; 8/5mm; 9/5. 5mm; 10/6mm. Imported.