Free images results:
 

Clamp pictures, stock photos and images

 
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Pipe Clamp Royalty Free Stock Photo
Author: Dwags
Press tool Royalty Free Stock Photo
Author: Meg380
Wrench set Stock Photography
Author: Kmitu
Horseshoe Royalty Free Stock Photography
Author: Belka
Pliers #2 Stock Image
Author: Kmitu
Wrench set Stock Image
Author: Kmitu
 
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Also, here are some commercial RF-licensed images that match your search criteria:  
Screw-clamp Stock Image
Author: Ka_ru
Screw-clamp Stock Image
Author: Ka_ru
Screw-clamp Royalty Free Stock Photography
Author: Ka_ru
C-clamp Stock Photo
Author: Sriharun

Explore more commercial options: More Clamp Stock Illustrations & Vectors | More Clamp Stock Video Footage