Features: brand new and high quality brand new and high-quality Compact size. The clip is about 2 for cm/0.8 inches in diameter, 4 for cm/1.6 inches in height. The suction cup is about 3 for cm/1.2 inches in diameter. The aquarium water tube clamp is made of high-quality plastic, durable and long service life, it will not scratch the glass. Easy to install, great help in water changing and cleaning the aquarium. The maximum clampable glass thickness is 15 mm/0.59 inches, which is suitable for fixing 4-6 mm/0.16-0.24 inches air tube. Two way of installation, directly fixed on the glass or adsorbed on the cylinder wall with included suction cup. Prevent the pipes from slipping and falling out. Package Includes: 2 Pieces Fish for Tank Pipe Clamp Holder with Suction Cup Specifications: Material: Plastic Color: White Size (Approx.): Clip-Diameter 2cm/0.79in, Height 4cm/1.57in Suction Cup-Diameter 3cm/1.18in Weight: Approx.15g 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!