Rising bubbles enhance vital aquarium aeration & water movement, versatile aquarium air stone for decorative & functional air bubbles Fits for 0.16"/4mm inner diameter tubing, Stone Length: 4"/10cm Material: Mineral & Plastic. Color: Green & Blue Total Size: Approx. 4.5" x 0.8" x 0.5"/11.5 x 2 x 1.2cm (LWT); Per Weight: 1oz. /120g, Package Included: 4 x 4-inch Air Stone Bar Air Stone Bar An airstone, whose purpose is to gradually diffuse air into the tank and provide oxygen for fish to breathe, is an necessity to have around your house if your are a lover of aquatic animals. Pawfly air stones are made of high quality non-toxic mineral material. With high temperature sintering, the stones are sturdy and durable, have high dissolved oxygen rate and create even and tiny bubbles rather than a limited number of large ones. Made of high quality and harmless mineral material Create tiny bubbles rather than bigger ones Keep providing oxygen for your fish to breathe Come with 4 PCS 4 inches
