5' to 10' telescoping length. Used for cleaning weirs by attaching the weir cleaning brush. Twist lock for simple control - loosen the twister to extend the pole, tighten it to hold the pole's curent position. Fiberglass outer for durability, fiberglass inner for extra durability. Safely clean weirs without entry! Fiberglass is unaffected by moisture and temperature, it will not shrink or swell. It will not conduct electricity or be harmed by chemicals.