The 20pcs 3mm Inner Diameter PVC Cord Strain Relief Boot Protectors are the perfect solution for protecting your cords and hoses from wear and tear. Made of high-quality PVC material, these strain relief boots are durable and long-lasting. They are easy to install and use, simply slide them over the cord or hose and they will provide a secure grip that prevents the cord or hose from bending or breaking. These strain relief boots are designed to fit 3mm inner diameter cords and hoses, making them a versatile and useful accessory for a wide range of power tools and other electrical equipment. With a pack of 20 included, you will have plenty of strain relief boots to use for all of your cords and hoses.