We say a bar of chocolate.
Do we call it "a bar of staples" as shown in the above picture?
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Sign up to join this communityIf we wish to be exact, or, perhaps, are looking for a stationery product, we can say a strip of staples. Office supply stores and websites sell staplers that are 'half strip' or "full strip". I once had a very long stapler that could take two strips altogether. A full strip (at least in the UK) seems to contain around 200 staples. 210 staples is a very common number.
Full Strip Staplers
Standard desktop staplers are usually full strip staplers. These staplers can be loaded with an entire strip of staples (hence the name!) and typically have a stapling capacity of between 20 to 50 sheets of 80gsm paper. Perfect for everyday use, full strip staplers are designed to be used on a flat surface.
Half Strip Staplers
Similar to full strip staplers but half the size, half strip staplers are great for light duty use within the office and will have a stapling capacity of between 15 and 30 sheets of 80gsm paper. They hold half a strip of staples and are also designed to be used on a flat surface like a desk or worktop.
I agree with Michael Harvey's answer of strip, but as another suggestion for what a native speaker might call this if they didn't know the commonly used term, I think a block of staples would also be reasonable. It's not a perfect fit but would probably be understood by anyone who had seen one before.