| 摘要 |
A broom specially designed for cleaning debris out of holes and cracks in asphalt and concrete prior to patching has a round broom head. The round head allows the broom to penetrate narrow holes and cracks resulting in more efficient and effective cleaning. The bristles are made of polypropylene and are similar to bristles used on street cleaners. A bristle band is free to move along the bundle of bristles, variably compacting the bristles for particular applications.
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