Item Details: * brand new and high quality *Made of high quality materials more *Material: ABS coil and polyamide nylon thread. *Spools measure 9.14m length thread diameter 1.65mm *Thread spools are factory wound to ensure superior feed. *For most for Blafor CK and Defor CKer grass trimmers see description for specific model.for GL280 GL230 GL340 GL425 GL430 GL530 GL540 GL545 GL555 GL560 GL850 GLC13 GLC120 GLC2000 GLC2500 GLC2500L GLC3000 GLC4525 GLC4525SB GLC5028 GLC5028SB GLC123L GLC1825N GLC1825L GLC3630L STC1820 STC1815 STC1820PC/EPC STC1840PC/EPC ST1823 ST4525 ST5530 ST7200 Pafor CKage Contents: 4X Thread Spool / 4X Thread Spool+1X Coil Cap+1X Spring