Compatible with for string trimmer models: CMCST910M,CMCST910M1 and CMCST910 Series for weedwacker String Trimmers Spool Model: CMZST080,CMZST0803 0.080inch Spool, Cap Model: CMZST120SC. Each spool is pre-wound 20 feet and 0.080inch diameter. High-quality ABS spool & polyamide nylon thread, flexible and long service life. Aerodynamic shape allows less drag for more efficient cuts. Note: 1. Be sure to wear goggles, wear long pants, and avoid line spilling and hurting people 2. Stay safe: Turn off the trimmer before replacing, installing, or removing the spool. Colour:Red Material:Plastic Package Contents: 6 * Line Spool 1 * Cap 1 * Spring Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.