The Orbitrim attaches to most gas trimmers and eliminates having to replace trimmer strings or wires; it easily attaches to 99% of the gas trimmers in just seconds; so spend time gardening and not replacing trimmer string. The Orbitrim will trim almost anything. Made of durable solid steel so it never breaks unlike regular trimmer string， The Orbitrim also features a safety ring to protect flowers and trees The Orbitrim works with 99% of all gas trimmers and its safety ring prevents accidents and protects flowers and trees. Have confidence with its 10-year guarantee. Plastic Made in USA Your security is our number one concern