ITEM NAME:Aquarium Air Pump Accessories Fish Tank with Airline Pipe Stones Check Air H5P7 Description: All In One Package - No Worry about Mismatching - Complete standard set of aquarium accessories for most air pump brands. 13 ft. Airline Tubing - 3/16 inch Standard ID Clear and Flexible material. Desired length for most fish tank, Toxic-Free, White, Flexible, and Kink-Resistant. 2 Air Stone Cylinder - 1.2 inch Airstone can be easily driven by even Nano air pumps. Suitable for aquarium, fish tank and hydroponics. Measure 0.8 x 1.2 inch (D x H). 6 Suction Cups and 2 Check Valves - Excellent 3/16 inch ID Standard airline tube holder, stick tightly to the smooth fish tank. Red clear valve can prevent water from back siphoning. 4 Connectors (Straight & T-shape) - Perfectly connect standard tubing, T-connector allows you to combine two inputs to create one output with dual outlet pumps. Package Includes: 1 x Airline Tubing (13 ft.; 3/16) 2 x Air Stone 2 x Non-return Check Valve 6 x Suction Cup 2 x T-connector 2 x Straight Connector.Desired length for most fish tank, Toxic-Free, White, Flexible, and. Suitable for aquarium, fish tank and hydroponics. 1 x Airline Tubing (13 ft.; 3/16). 6 x Suction Cup. 4 Connectors (Straight & T-shape) - Perfectly connect standard tubing, T-connector allows you to combine two inputs to create one.