Given tool inside that's specially selected (4-6)
I believe the answer is:
hand-picked
'selected' is the definition.
(similar in meaning)
'given tool inside that's specially' is the wordplay.
I cannot really see how this works, but
'tool' could be 'pick' (pick is a kind of tool) and 'pick' is found in the answer.
'given' could be 'handed' ('hand' can be a synonym of 'give') and 'handed' is found in the remaining letters.
No letters remain.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Another definition for hand-picked that I've seen is " Carefully selected".)