'On hand' = 'in stock'

[Mirko]

English Language Proficiency Tests, Advanced Level

ESL/EFL Test #654 "Prepositional Phrases - In, On, Out and Under (27)", question 9

You need three rolls of Duct tape? Unfortunately, we only have two ......... hand. We are receiving more on Thursday if you would like to come back.

(a) in
(b) on
(c) out
(d) under

English Language Proficiency Tests, Advanced Level

ESL/EFL Test #654 "Prepositional Phrases - In, On, Out and Under (27)", answer 9

You need three rolls of Duct tape? Unfortunately, we only have two on hand. We are receiving more on Thursday if you would like to come back.

Correct answer: (b) on
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like cash "in" hand why not in here?

Mirko

[Mister Micawber]

They are different idioms with different meanings. 'On hand' = 'in stock'.
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Native English teacher at Mister Micawber's