The round plastic rings in two sizes are slipped on the needles to mark the beginning and ending of pattern repeat stitches in lace, cable or colourwork, or to indicate points of increasing or decreasing in your knitting pattern.
 
329 Stitch Ring Markers for needle size: 2.0 - 4.0 mm/4.0 - 6.5 mm                                                             10 small and 10 large rings / pack. 
354 Jumbo Stitch Ring Markers for needle size: 8.0 - 10.0 mm/12.75 - 19.0 mm                                    10 small and 10 large rings / pack.
3107 Soft Stitch Ring Markers for needle size: 2.0 - 3.75 mm/3.75 - 8.0 mm                                             10 small, 20 large rings / pack. 
3108 Soft Jumbo Stitch Ring Markers for needle size: 8.0 - 10.0 mm/12.75 - 19.0 mm
      10 small, 20 large rings / pack.