High quality materialThe line string trimmer replacement spool is made of high-quality nylon material,which is strong, elastic and flexible.Centrifugal force and aerodynamics are used to reduce resistance and achieve fast and effective cutting,and it is not easy to break,with a long service life.Efficient WeedingThe garden accessories strimmer wire is sturdy and cut,and its aerodynamic shape reduces drag,allowing it to stretch and cushion when hitting hard surfaces for more efficient cutting.Very suitable for landscaping, gardening,agriculture and general gardening purposes.Easy to useSnap into place for quick and effortless replace without tools.Pre-wound for maximum reliability and uncompromised performance,more safer and more time-saving than manual winding, reduces damage for string grass trimmer and not get stuck when mowing.Widely ApplicableStrong centrifugal force and cutting fast during using, recommend to wear eye protection and long pants to avoid unnecessary injury.Suitable for multiple models: 21222A, 21602, 21062, 21132, 21242, 21282, 21302, 21332, 21262, 21312, 21342, 2100302.Package IncludeIncludes 4 trimmer strimmer spools,It is 4.9m long and 0.065 mm in diameter,very suitable for wire holes.The coil can be inserted and removed without tools,is easy to use and will not damage the device.