Loses knack for coiling hose only a foot long (5,5)

I believe the answer is:

ankle socks

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'coiling hose only a foot long' is the definition.
I know nothing about this answer so I can't judge whether this works.

'loses knack' is the wordplay.
'loses knack' anagrams to 'ANKLE SOCKS'.
However, I'm not sure how this is indicated.

'for' is the link.

Can you help me to learn more?

(Another definition for ankle socks that I've seen is " Loses knack (anag.)".)

I've seen this clue in The Telegraph.

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