Free images results:
 

Kilo pictures, stock photos and images

 
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Weight Royalty Free Stock Image
Author: Milogu
 
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Also, here are some commercial RF-licensed images that match your search criteria:  
Kilo Royalty Free Stock Photography
Author: Monstershark
Kilo Royalty Free Stock Images
Author: Showcake
One Kilo Stock Photography
Author: Tomkai