Update 2: It’s back!

Update: Sold out

The airline-safe Gerber Shard incorporates six different tools into a single piece of metal the size of a key, and you can slide it onto your keychain for $4 today. It’s been slightly cheaper a few times in the past, but usually as an Amazon Add-On Item, meaning it would only ship as part of a larger order. Today though, it’s the ultimate Prime-eligible impulse buy.

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