The round plastic rings in two sizes are slipped on the needles to mark the beginning and ending of pattern stitches, increasing, decreasing on the garment.
Features:
Material: Soft plastic
Contents: 20 small rings, 20 large rings
Small size: 3.75 mm around, fits US 0 to 5 knitting needles
Large size: 8.0 mm around, fits US 5 to 11 knitting needles