Triangle design enables easy cleaning in corners and along walls for thorough coverage and fewer missed spots. Handle compatibility: the pool vacuum suction head can be connected to most standard extension rods and to 1.2' and 1.5' pool vacuum hoses for flexible setup. Material: built from ABS, offering durability, long life, and resistance to damage. Application: specifically designed for glass fiber and vinyl lining pools, providing safe and effective cleaning for these surfaces. Use scenarios Scenario 1: Cleaning a rectangular pool with corners and steps. The triangular head reaches tight corners and along vertical walls for comprehensive maintenance. Scenario 2: Regular maintenance of a vinyllined pool. Durable ABS construction reduces wear while cleaning close to soft vinyl surfaces. Scenario 3: Care of a fiberglass pool. The head cleans wall areas and near fixtures efficiently without excessive pressure, preserving surface integrity.