10 x International Warning Signs Each part of an electric fence installed along a public street or highway must be marked at frequent intervals by warning signs attached to fence posts or firmly attached to wires. For optimal attachment to all fence strips and electrical cables. Item specifications: Dimensions: 20 cm x 10 cm. International version with 9 languages with pre-drilled holes for attachment. Can be attached to pasture fence strip, wire and rope. Box contents: 10 international warning signs "electric fence".