Compatible with for string trimmer models: CMCST910M,CMCST910M1 and CMCST910 Series for weedwacker String TrimmersSpool Model: CMZST080,CMZST0803 0.080inch Spool, Cap Model: CMZST120SC.Each spool is pre-wound 20 feet and 0.080inch diameter. High-quality ABS spool & durable 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 people2. Stay safe: Turn off the trimmer before replacing, installing, or removing the spool.Colour:RedMaterial:PlasticPackage Contents:6 * Line Spool1 * Cap1 * SpringOnly 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.