Cocoknits makes beautifully-designed, premium craft tools to enhance the art of knitting.  Their Flight of Stitch Markers offers a full range of styles and sizes of nylon-coated steel markers, each in their own little Kraft paper tubes. Set includes:

24 Small stitch markers accommodate up to US 7 / 4.5mm needle

24 Triangle stitch markers accommodate up to US 9 / 5.5mm needle.

24 Standard stitch markers accommodate up to US 13 / 9mm needle.

24 Jumbo stitch markers accommodate up to US 19 / 16mm needle

24 Split-Ring markers hook onto stitches of all sizes