In- Features: OOTDTY brand new and high quality Easy to set up and easy to tear down. Helix shape of flow regulation, you can control and regulate the water flow freely. High level of filtration system, effectively filter the protein, oil film, and floating dust. Low voice and high output, create a quiet environment. Made of acrylic, durable and environmentally friendly. Pistils floating for head design, lead to an increase in the absorption which allows the more traditional dentation structure. Two types of connectors, provide more selection for the daily use. Specifications: Material: Acrylic Color: Transparent Size (Approx.): Total Length: 170mm/6.69" Floating for Head Length: 105mm/4.13" Connector: 12/16mm 16/22mm Weight: Approx.100g Package Includes: 1 Piece Aquarium Surface Skimmer Note: 1.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!