Craftsman cmzst260h trimmer head Compatible with Craftsman CMCST920 & CMCST960 Series String Trimmers Replacement String Trimmer Spool Head Model:CMZST260H Craftsman CMCST920 Trimmer Head with 0.080" 20ft pre-wound line.Quick Load spool feature allows for fast and easy reloading,without disassembly Craftsman CMCST960 Replacement trimmer head shell is made of ABS material and line is made of high quality nylon material to maximize cutting efficiency and durability If you have any quality problems, please feel free to contact us,we will provide appropriate solutions within 24 hours CMZST260H String Trimmer Head Replacement Compatible with Craftsman CMCST920 & CMCST960 Series String Trimmers with Pre-Wound 0.080" 20ft Line