Features:_x000D_ _x000D_ This diffusion stone is used for home brewed beer carbonization, more convenient to use. _x000D_ High efficiency, with the help of the aeration stone, your beverage can be carbonating easily. _x000D_ Made of high quality stainless steel material, which is corrosion resistant and durable in use. _x000D_ Easy to clean and easy to use, this diffusion stone is a practical accessory for beer brewing. _x000D_ The stone is ideal to force carbonate your beer, or as an aeration stone prior to fermentation. _x000D_ _x000D_ Specification:_x000D_ Condition: 99.99% Brand _x000D_ Material: Stainless Steel_x000D_ Use: for home brewed beer carbonization_x000D_ Total Length: Approx. 48mm / 1.9in_x000D_ Upper Diameter: Approx. 7mm / 0.3in_x000D_ Bottom Diameter: Approx. 12mm / 0.5in_x000D_ Type: 0.5 Micron, 2 Micron (optional)_x000D_ Weight: Approx. 16g / 0.6 oz_x000D_ _x000D_ Package List:_x000D_ 1 x Diffusion Stone_x000D_ _x000D_ Note:_x000D_ 1. Please allow 0-2 mm error due to manual measurement. Thanks for your understanding._x000D_ 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard. 1This diffusion stone is used for home brewed beer carbonization, more convenient to use 2High efficiency, with the help of the aeration stone, your beverage can be carbonating easily 3Made of high quality stainless steel material, which is corrosion resistant and durable in use 4Easy to clean and easy to use, this diffusion stone is a practical accessory for beer brewing 5The stone is ideal to force carbonate your beer, or as an aeration stone prior to fermentation