Compatible with Black+Decker models: 82300, 82310, 82312, CST500, CST800, GE600, GE800,GL250, GL310, GL360,GLC500,ST200, ST300, ST400,ST1000, ST3000, ST4000, ST4050, ST4400, ST4500, ST5000, ST6500, ST6800, ST7600Practical Tool compatible RS136, compatible RS-136, compatible RS-136-BKP, compatible RS136BKP, compatible143684-01. Cap type: compatible 682378-02. Replacement spring model: compatible 68223500.Save Money and TimeAerodynamic shape allows less drag compatible more efficient cuts .With the auto feed system, the replacement spool eases the tedious work of hand-winding spools.Premium QualityIt made from twisted copolymer nylon resin and synthetic ,Pliable and flexible allowing compatible the line to stretch and cushion on impact with hard surfaces.More healthier and greenerIts good compatible your grass.It superior to the standard round line by producing an improved cutting action, which helps to keep grass healthier and greener.