three blue plastic electronic connection blocks metal rivets labeled

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Three blue plastic electronic connection blocks, metal rivets, labeled as \
Three blue plastic electronic connection blocks, metal rivets, labeled as \
   
   
   
   
   
Three blue plastic electronic connection blocks, metal rivets, labeled as
   
   
   
   
   
   
   
Three blue plastic electronic connection blocks, each featuring two metal rivets, arranged vertically. Each block is labeled with the number "2." The rivets are circular and metallic, positioned on opposite ends of the blocks. The blocks are arranged on a white background, emphasizing their bright blue color and simple design.

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