Features: Suitable for the connection of bottom and lower water pipes of Fish Tanks. Used to connect the water pipes of both sides and prevent the aquarium from leaking. Made of PVC, surface-polished, clear thread, easy to use. Widely use to Open hole connection for inlet- and outlet pipes of Fish Tanks, water tanks, buckets, etc. Small size and lightweight, convenient and reliable to use, long life- service, not easy to damage. 5 Different sizes- for you- to choose. Specifications: Material: PVC SizeA: Approx.20mm/0.79in SizeB: Approx.25mm/0.98in SizeC: Approx.32mm/1.26in SizeD: Approx.40mm/1.57in SizeE: Approx.50mm/1.97in Package Includes: 1x Water Pipe Joint Connector note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.