The most common and most likely answer to this crossword clue is the 4 letter word HAFT
I've seen this crossword clue in The Times
H
A
F
T
Buddy explains!

The straight part
We know that "Handle" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case handle = haft.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does HAFT mean?
HAFT noun- The handle of a tool or weapon.
- To fit a handle to (a tool or weapon); to grip by the handle
- A piece of mountain pasture to which a farm animal has become hefted.