Our coral frag rack is made of acrylic material, which is generally considered to be an material for aquarium equipment and accessories. It has high transparency, light weight but no loss of hand feel, stable characteristics, and is not prone to physical and chemical reactions. It is safe and to fish and corals. Feature - Brand: POPETPOP. - ColorTransparent - Material: Acrylic. - Size: About 33.50X10.50X5.50cm/13.17X4.13X2.16in. - Selected material, this acrylic coral bracket is beautiful and generous, built to last long. - Equipped with suction cups at the back, you can install it on fish tank firmly. - The suction cup nut can be tightened by twisting to achieve a strong adsorption without falling off - Provides support for coral plant. Very good for growing live coral. Also can be used to separately placed into aquarium. - Especially suitable for fish tank, aquarium and similar equipment. Package list: 1 x POPETPOP Coral Bracket