Description Included 30PCSfish tank oxygen pump use joint, made of source material, practical and useful. All of these are made of stainless steel source material, rustproof and practical. Our professional splitter switch must meet you needs. It is one of the best choices for you. Features - Color: Silver. - Size: 11.2 x 2.8 x 2.3 cm. - Material: Stainless steel. - Made of Stainless Steel Source material, practical and useful, long service life. - design allow you control the flow of vital O2 from your pond aerator or aquarium air pump as you need. - Lever let you operate it easily. - The outlet of Water Flow Control can be connected to aquarium tubing. - Inner diameter of outlet valve: 4mm. - Dear buyer, due to lighting effect, monitor's brightness, manual measurement, etc., there could be some slight differences in the color and size between the photo and the actual item. Sincerely hope that you can understand! Thank you!Package list: 30 x splitter switch