Thread Cutterz Flat Mount Thread Cutters are a convenient tool that you can mount to your sewing machine or any clean, flat surface. The Flat Mount Thread Cutters will easily slice through yarn, thread, and embroidery floss. This tool is ideal if your sewing machine doesn't have a thread cutter, it's become too dull to use, or if it's in an inconvenient location. Flat Mount Thread Cutters include a heavy-duty 3M adhesive that will adhere to most surfaces, and each side has a stainless steel blade that will stay sharp after multiple uses. The Flat Mount Thread Cutters come in four styles, basic black, and purple, or you can add some flash to them and get purple or black with genuine Swarovski crystals along the top.