Junxidz RS-136 Trimmer Spools Line 20ft 0.065\" Compatible with Black Decker ST4500 ST1000 ST4000 GE600 CST800 ST6800 String Trimmer,Weed Eater Replacement Line Auto-Feed Spool with 682378-02 Cap Cordless Grass Trimmer  (Manual Feed)

[Spool Specification]: Compatible with Black&Decker string trimmer spools, 20ft 0.065 inches, compatible with spools models RS-136 / RS-136-BKP / 143684-01.|[Compatible models]: Fit for Black Decker weed eater string trimmer: CST500, ST1000, ST3000, ST4000, ST4050, ST5000, GE600, ST200, ST300, ST400, CST800 and ST6800.|[Professional CNC winding spool]: Compatible with Black Decker spools by the CNC machine cutting and winding, automatic line change. Manual winding is cumbersome and can easily get stuck during use, which can cause damage to the string trimmer.|[Rugged material]: High-quality ABS spool & tough polyamide nylon thread, flexible and long service life. Use centrifugal force and aerodynamics to reduce drag and achieve fast cutting.|[Precautions for use]: When you using this product, protective measures should be taken to avoid damage to the body caused by spilled wires. The product is only suitable for young grasses. For strong weeds, use other tools such as blades to trim.