Stiff polypropylene bristles hold up on sidewalks, parking lots, and other rough surfaces; not affected by water or petroleum products. Street sweeps are durable, tough, long-wearing; perfect for street crews, construction, and other demanding work sites. Will not absorb moisture; resistant to most chemicals, acids and oils. For economical, general scrubbing. Use as hand held unit or attach to telescoping handle to reach corners and ceilings. BPA free.