Wide Compatibility: Models: 82300, 82310, 82312, CST500, CST800, GE600, GE800, GL250, GL310, GL360, GLC500, ST200, ST300, ST400, ST1000, ST3000, ST4000, ST4050, ST4400, 500, ST5000, ST6500, ST6800, ST7600 Save money and time: Contoured shape allows less drag for more efficient cuts. With automatic feeding system, the replacement spool makes the tedious work of manually winding spools by hand. Premium Quality: Made of flexible and flexible braided synthetic copolymer nylon resin which allows for the line to stretch and absorb shocks with surfaces Healthier and greener - It's good for your lawn. It is superior to the standard round line in producing enhanced cutting action, which helps keep the lawn healthier and greener. Package includes: 6 piece cutting line.Replacement part not original.