From the product description, check product page for current description, price and availability:

• Light and durable aluminum body is lighter than steel but remains Durable and long lasting. Aluminum is the industry standard for Co2 manifolds for their strength and resistance to corrosion. This manifold is ideal for homebrewers, bars, or anyone who is looking to easily split gas for beer or beverage dispensing and even for force carbonation.
• Integrated high quality check valve outputs prevent liquid from flowing into the manifold and your regulator. Don’t worry about dirty lines or ruined regulators ever again! Every integrated check valve ensures that your beer stays on the right side of the line.
• No leaks due to ample thread tape and vigorous water testing after assembly. All manifolds are internally cleaned before assembly for the purest air possible. Don’t settle for mass produced, low quality manifolds from overseas. The Weekend Brewer manifold is the highest quality manifold on the market due to rigorous testing and quality control.
• Mounting holes allows for easy installation on walls or kegerators. Two screws or nails will easily secure your manifold to any surface for ease of use.
• Made in the USA these manifolds are assembled by American workers in our fayetteville, AR facility.

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