All fingers and thumbs? (3)

I believe the answer is:

ten

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'all fingers and thumbs?' is the definition.
(fingers on someone's hands)

'all fingers and' is the wordplay.
'all fingers' becomes 'te' (I can't explain this - if you can you should believe this answer much more).
'and' becomes 'n' (common abbreviation for 'and').
'te'+'n'='TEN'

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(Other definitions for ten that I've seen before include "Dudley Moore/Bo Derek film" , "time" , "Cardinal number" , "Figure" , "How many" .)

I've seen this clue in The Sun.

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