Vacuum head is used daily to clean the pool tiles & to remove the dust in the pool water. Vacuum heads has wheels to roll on the tile area. There are different types of vacuum heads. Important of this unit is the weight & the length. When you have bigger vacuum head you’re cleaning is much faster & saving little time. Weight will help that to go in to the deep end without much force. Wheels will help that to have a free running on the tiles while its own brush & Flaps will whip the tile.Recommended size to the commercial pools is 19” with brush Flap wheels & especially with 3.7 kg weight. Also this UK Brand will have a facility of replacing any parts if required. Please refer the pictures.