![](http://www.alamy.com/thumbs/6/65F9D4CC-624E-4F23-A490-BBD36B8E7E8B/KRCEK7.jpg)
Hands of a workman tighten a bolt.
Size: 5575px × 3721px
Photo credit: © Patrizio Martorana / Alamy / Afripics
License: Royalty Free
Model Released: No
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