Yontree 2 Size Plastic Crochet Knitting Row Counter Round Stitch Tally Knitter Needle 10Pcs Material: plastic Red size (Length x Width): about 0.82" x 0.59", Blue size (Length x Width): about 0.86" x 0.47" Quantity: 10pcs(5 pcs red and 5 pcs blue) Allows you to track row, stitch and pattern counts. Slips onto needle, so you can track number of sts. and rows already worked. Helps you through any project.