The crochet Crab Stitch or the Reverse Single Crochet is such a beautiful crochet stitch to finish of crochet projects or even knit projects. It creates the crochet crab stitch border and it is really simple, but at the same time looks really good. The reverse single crochet edging has the same steps as regular single crochet stitches, however you are working the stitches backwards or in the opposite direction.