[Compatibility]Replacement Line compatible with most Universal and Trimmer Edger. [ ]Flex blade refills are made of copolymer flexible material, which effectively reduces the risk of breakage during operation and increases working life. [ Upgrade]This Universal weed eater ,superior to traditional trimmer spool line, is a completely cutting system. Easy to install, no worries about missing parts, minus the wire winding assembly link. [More Efficiency]Advanced are aerodynamic for reduced drag for more efficient cuts and 50X further "uninterrupted" edges , saving and money. Color: Yellow & Red Material: plastic Package Contents: 48 x Universal weed eater 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.