Amazon.com: AKOAK 10 Picee Per Pack Plastic Knit Counter Knitting Crochet Stitch Marker Row Counter - 5 Large Size and 5 Small Size - Blue and Red : Arts, Crafts & Sewing
2 Large Red +2 Small Blue Plastic Knit Knitting Needles Row Counter (Large 2.2 * 1.5cm+Small 2.2 * 1.2cm) - AliExpress
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Row Counter – Premier Yarns
SENTRO 48 Needles Knitting Machine with Row Counter and Plain/Tube Weave Convers | eBay