This comes pre-wound
When installing these parts in your equipment
replaces the worn or damaged bump knob assembly that secures your line trimmer's line spool
DCST920P1 Type 1
[Compatible models]: Compatible with greenworks weed eater string trimmer Cap: 21332
THTEN CMZST0653 CMZST065 Trimmer Blades Head Compatible with Craftsman CMCST900,CMESTA900,CMESTE920,CMZST98020,CMCST915,CMEST913 String Trimmer 18 Pack Husqvarna T35 Trimmer Line This comes pre-woundTrimmer Bladed Head for multiple Craftsman string trimmer models: CMCST900,CMESTA900,CMESTE920,CMZST98020,CMCST915, CMEST913. Easy Installation: simply push this trimmer head into the string socket and it automatically locks in place with assistance from the side push buttons. Packing Including: 8 Pack Polycarbonate Blades, 4 Set Screw, 1 Pack Trimmer Head, 1 Pack Tool wrench. For Best Use: avoid using this accessory for edging, working alongside