![](http://www.alamy.com/thumbs/6/92AA2664-F11B-435F-A2B3-CAB95442B038/H2FAAT.jpg)
Hands of a workman tighten a bolt.
Size: 3716px × 5575px
Photo credit: © Patrizio Martorana / Alamy / Afripics
License: Royalty Free
Model Released: No
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