Garment manufacturers designed kit with tennis legend (8,7)
I believe the answer is:
knitting needles
'garment manufacturers' is the definition.
I don't know anything about this answer so I cannot tell whether this works.
'designed kit with tennis legend' is the wordplay.
'designed' is an anagram indicator (designed with the letters).
'with' says to put letters next to each other.
'kit'+'tennis'+'legend'='kittennislegend'
'kittennislegend' anagrammed gives 'KNITTING-NEEDLES'.
Can you help me to learn more?
(Another definition for knitting needles that I've seen is " tools for craftspeople".)