Free Motion quilting on you home machine has never been easier! Now you can use any home sewing machine for a variety of quilting projects. Martelli free motion quilting products prevent injuries to hands and fingers while providing solid sure guidance of your quilt. The hoops are made of tough and durable high-density polyethylene (HDPE) material. They have the Martelli no slip material on the bottom of all of our hoops. A wide groove cut into each hoop allows easy access for your machines presser foot. Each hoop also has comfortable hand grips for easy control and keeps your hands safely away from the sewing head. *Products cannot be sold to Amazon, on Amazon, or to unauthorized third-party sellers to resell on Amazon.*