Each Flexiblade simply replaces in seconds saving time and eliminating the frustration of trimming and fussing with nylon line * Outlasts standard trimmer line resulting in more trimming time and less time spent on aggravating spool or line changes * No longer do you have to fight with tangled and twisted nylon trimmer lines or spools * Long lasting durable plastic construction * Conveniently stores on grass trimmer for ease of use when required