The Craftsman Genuine String Trimmer Line 3-Pack is designed for use with Craftsman string trimmers. Each spool is pre-wound with 30 feet of .065" trimmer line, making it convenient and easy to use. This high-quality trimmer line is compatible with Craftsman trimmers and ensures precise and efficient cutting performance in your yard or garden. With this 3-pack, you can easily keep your trimmer equipped with fresh line for extended use.