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Why Escalator Steps Have Grooves 😯 (Explained)

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Why do escalator steps have grooves? (Your safety!) #shorts #viral #escalator

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Why Escalator Steps Have Grooves

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Why Escalator Steps Have Grooves?🤔 (EXPLAINED) #shorts

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Ever Wondered Why Escalators Have Grooves? 🤔🛗 #facts

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Why Do Escalator Steps Have Grooves?

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Why do escalator steps have grooves?

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