The ALM Manufacturing HL007 Spool Head Assembly Kit is compatible with a range of dual line models Homelite fits most Homelite trimmers using 2.0 mm (.080 inch) line. Performance Power/ B& Q Trimmer Models PRO24ccBCA, PRO24ccSGTA, PWR21ccSGTA, PWR25ccSBCA. Ryobi RPT7011. JCB PBC25F, PLT25F. Stiga fits most petrol trimmers with curved shaft (right hand thread). Champion Trimmer Models M22. The kit contains 1x housing. 1x spool & line. 1x spool retainer/bump knob. 1x spring. It is supplied with 5/16unc x 1/2 inch right hand thread bolt. The spool head assembly kit compares to 1911-9009-01 / DA3001-A.