Whip made of cord with grip in plastic (6,4)

I believe the answer is:

riding crop

'whip' is the definition.
(riding crop is a kind of whip)

'cord with grip in plastic' is the wordplay.
'with' says to put letters next to each other.
'plastic' indicates an anagram (plastic can mean easily moulded).
'grip'+'in'='gripin'
'cord' put after 'gripin' is 'gripincord'.
'gripincord' anagrammed gives 'RIDING CROP'.

'made of' acts as a link.

(Another definition for riding crop that I've seen is " Whip up".)

I've seen this clue in The Times and The Sunday Times.

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