Wide Compatibility: Models: 82300, 82310, 82312, CST500, CST800, GE600, GE800, GL250, GL310, GL360, GLC500, ST200, ST300, ST400, ST1000, ST3000, ST4000, ST4050, ST4400, ST4500, ST5000, ST6500, ST6800, ST7600 Save Money and Time: The streamlined shape allows for less drag for more efficient cuts. With the automatic feed system, the replacement spool makes the tedious work of manually winding spools by hand a thing of the past. Premium Quality: Made of flexible and pliable braided synthetic copolymer nylon resin that allows the line to stretch and absorb impacts with surfaces Healthier and Greener - It is good for your lawn. It is superior to standard round line by producing an improved cutting action, which helps keep the lawn healthier and greener. Package Includes: 6pcs trimmer line.Non-original replacement part.