CHENGYIDA 5-PACK Knitting Needle & Crochet Hook Sizer With Stitch Gauge Ruler ,Knitting Gauge Knitting Needle & Crochet Hook Sizer Stitch Gauge Ruler Knitting needle and crochet hook sizer for metric, US, UK & Canadian sizes Sizes from 2mm-10mm, US 0-15, UK/CDN 14-000 5 1/2" (14cm) ruler to measure stitch and row gauge Made of flexible plastic Measures ~ 6 1/4" x 1 1/2"