Features: Aquarium Air Pump Water Pipe Connector: The fish tanks air pump water pipe connector adopt fine smooth polished-surface & perfect mould opening, good seal and fitting perfect for your various size air pump-valve & water pipes. Wide Application: The aquarium air pump water pipe connector offer 7 different optional size for various pipe diameter, which can meet your various size fish tanks & aquariums outlet pipes. Selected Material: The air pump-valve water pipe connector use qualified plastic material, nontoxic, smooth-polish with wear resistant, with durable performance. High Grade Design: The transparent-water pipe fitting connectors use industrial-grade design standard, thicken pressure-bearing medial-wall, sufficient material, durable and watertight . Non-Leakage: The airpump water pipe connector use great sealing design, safe which can with-stand high pressure and non-leakage for perfect performance. Specifications: Product Dimension: approx. 10cm/3.93inch Material: PVC Style Option: 8-12mm/8-16mm/12-16mm/12-18mm/16-18mm/12mm(Y-shape)/16mm(Y-shape) Package Includes: 1 x Aquarium Air Pump Water Pipe Connector note: Product Dimension: approx. 10cm/3.93inch Material: PVC Style Option: 8-12mm/8-16mm/12-16mm/12-18mm/16-18mm/12mm(Y-shape)/16mm(Y-shape)