ALM HL008 Spool head assembly

Part number:

ALM HL008

ALM Manufacturing spool head assembly kit

Contains:

1 x Housing
1 x Spool & Line
1 x Spool Retaining Bolt
1 x Spring

Supplied with a 5/16UNC x 1/2″ left hand thread bolt

Manufactured in the UK

Will this fit my machine?