Product Features: Made of acrylic,it is high intensity . Suitable for those fish tank that refining device or bubble stone bend greatly.Effective,rust resistance. Function: easy connection to the air line of the fish tank. Suitable for fish tanks, aquariums, especially aquatic plants, tropical fish viewing and breeding fish tanks Notes: 1.Please allow 1-3mm measuring deviation due to manual measurement. 2.Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Package Includes: 2 x U Shaped Bend Tube(1 Short and 1 Long) Product Specification: Name: U Shape CO2 Diffuser Connector Material: Acrylic Application: co2 hose or air hose connection on aquarium glass Suitable pipe size: Connect the air pipeline with an inner diameter of 4mm (outer diameter 6mm) Suitable thickness of glass: less than 0.6" CO2 Drop Checker Aquarium Cone Red Worm Feeder 3 in 1 Feeding Cup Set Reptile Feeding Tongs Aquarium Plant Cup Feeding Dish Add to Cart Add to Cart Buying Options Buying Options Buying Options Add to Cart Customer Reviews 3.8 out of 5 stars 38 3.8 out of 5 stars 30 3.8 out of 5 stars 18 4.4 out of 5 stars 51 3.9 out of 5 stars 30 3.9 out of 5 stars 19 Price $7.64$7.64 $8.00$8.00 — no data — no data — no data $10.19$10.19 Material Glass ABS Plastic Plastic Glass Glass Spiral CO2 Diffuser Pre-filter Sponge Intake Filter Cover Skimmer Inflow Lily Pipe Glass U Shape Tube Fish Egg Tumbler Incubator Add to Cart Add to Cart Add to Cart Add to Cart Buying Options Add to Cart Customer Reviews 3.9 out of 5 stars 78 4.3 out of 5 stars 202 4.1 out of 5 stars 111 4.0 out of 5 stars 37 3.9 out of 5 stars 13 4.2 out of 5 stars 36 Price $10.19$10.19 $6.95$6.95 $8.72$8.72 $19.99$19.99 — no data $11.69$11.69 Material Glass Plastic Plastic Glass Glass ABS Size 25MM S/M/L 12MM/16MM 13MM/17MM S/L 50MM