The Clorox Pool&Spa Concrete Vacuum Head has an extra-wide, 19-inch flexible body to get hard to reach pool walls. The handle uses Push&Click technology for quick assembly and easy detachment from pole. Weights on the bottom help it stay submerged while being used and the urethane wheels protect from scratching surfaces. The concrete vacuum head is professionally weighted to properly clean concrete pools. The flexible head includes wheels designed to properly glide across a concrete pool while properly cleaning the surface.