While you wait for answers, we may have found some information which could help you.
Click here for Grass Trimmer Challengewhere do I get 18v battery for Challenge Strimmer DCSRT18?
where can i purchase a spool & line complete ?
Spring for Prop Shaft in a 250W Grass Trimmer?
spare part for challenge extreme?
where can i get a replacement strimming head for a challenge grass strimmer?
Replacement Spool Cover Challenge Extreme Grass Trimmer Product?