1Peel the cucumbers and carrots, then slice them into thin rounds.
Chop the hard-boiled eggs into small pieces.
Finely dice the small onion.
In a large bowl, combine the sliced cucumbers, carrots, chopped eggs, and diced onion.
Add the mayonnaise to the bowl and mix all the ingredients until well combined.
Season with salt and pepper to taste, if desired.
Serve the salad chilled or at room temperature.