The Genie Mini Crimps from GEMINI are used in hooklength making to effectively hold your hooklink swivels and beads in place. These pleats are blackened and can be used on 60 to 80 pound monofilament. The sleeves are made of high quality material for a permanent and effective grip. Use a crimping tool to tighten them. The Gemini Genie Mini Crimps come with 50 pieces per pack.