1、Suction cup can be installed on both sides of the product, convenient for different directions. 2、Used for turning the air duct, so that the air duct in the tank and the upper edge of the fish tank is free from breaking or blocking. 3、At the bend of the air duct on the fish tank glass, insert the glass to fix it after using the fixing clip, which is convenient and easy to operate. 4、Made of practical plastic material, which is strong, durable and has a long service time. 5、This product is applicable for fish tank glass of thickness less than 8mm/0.3in. 4 x Pipe Holder 4 x Suction Cup   Item Type: CO2 Pipe HolderMaterial: Plastic Color: As Pictures Shown Weight: Approx. 43g/ 1.5ozPurpose: Fish Tank Pipe Fixing ClampApplicable for Fish Tank Glass of Thickness Less Than 8mm/ 0.3inUsage:Use a fixing clamp at the bend of the air pipe and fix the sucker in the cylinder.At the bend of the air pipe on the fish tank glass, insert the glass to fix it after using the fixing clip.