【Premium Material】: High strength 304 stainless steel aquarium hose adapter ensures durability and reliability in both freshwater and saltwater aquariums 【Optional Size】: Available in two size options - inner diameter of 12mm to 16mm, or 16mm to 22mm, catering to various needs for different hose sizes 【Leakproof Design】: Strong and sturdy stainless steel aquarium hose joint fitting provides a secure, tight seal, ensuring efficient water flow in your fish tank 【Easy to Install & Use】: Quick and easy to connect and disconnect hoses; aquarium tubing pipe connector offers strong sealing and reliable connectivity for stable operation in your aquarium setup 【Versatile Use】: This aquarium hose joint adapter fits most standard aquarium tubing, ideal for connecting pipes, hoses, and tubing in aquariums, ponds, or hydroponic systems, enhancing water circulation and system functionality Specification: Material: Stainless Steel Size Chart: 12mm to 16mm or 16mm to 22mm Package Includes: 1 Piece Aquarium Hose Adapter