Leaf Blowers & Yard Vacuums: CFM vs. MPH

Why are metal cast or stamped steel impellers preferred over plastic impellers in yard leaf vacuums?

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 Correct IncorrectVacuums inevitably suck up acorns, gravel, pine cones, and small sticks. Metal impellers resist impact fracture and maintain shredding blade edges where plastic fins shatter.

Why are metal cast or stamped steel impellers preferred over plastic impellers in yard leaf vacuums?

• Plastic impellers attract lightning
• Metal impellers make the vacuum lighter
• Metal impellers don't require electric power
• Metal resists shattering and blade chipping when high-speed gravel, twigs, and acorns are ingested