The ball lock post is made of stainless steel, and it is safe and non-toxic. You can install it on the beer barrel. The ball lock post can be used repeatedly and durable for long time use.    Features:Made of stainless steel, safe and non-toxic, odorless and anti-rust.It is applied to connect other accessories, such as: O-shaped ring, poppet valve, pipe and nut.Easy to install: easy to install the ball lock post, just screw tightly the ball lock post.Reusable and durable: the ball lock post can be used repeatedly and durable for long time use.Comes with the 2 ball lock posts, and it can meet your need.  Specifications:Condition: 100% Brand NewMaterial: Stainless SteelColor: SilverWeight: approx. 124g/4.37oz  Package List:2* Ball Lock Posts Note: 1. Please allow 0-2cm error due to the manual measurement. Thanks for your understanding. 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.    Features USE EFFECT: Ball Lock Post comes with the 2 ball lock posts, and it can meet your need. Ball Lock Post is Built to meet standard Specification, strictly follow factory quality control. We strive to provide you with the highest quality product and the best customer experience, you can rest assured to buy REUSABLE AND DURABLE: Ball Lock Post can be used repeatedly and durable for long time use. Good quality not only can provide a safer guarantee for your life, but also good materials can increase product life. Every product must go through strict inspection to ensure reliable quality HIGH-QUALITY MATERIALS: Ball Lock Post is made of stainless steel, safe and non-toxic, odorless and anti-rust. Ball Lock Post is firm, corrosion resistant and durable, and has long service life. We believe that our Ball Lock Post will make you feel value for money SCOPE OF APPLICATION: The Ball Lock Post is suitable for coming air and the overflow water. This Ball Lock Post will be a good auxiliary tool when you use, the Ball Lock Post will make your life more convenient EASY TO INSTALL: Ball Lock Post is easy to install the ball lock post, just screw tightly the ball lock post. Ball Lock Post is convenient to use. And we are sure that the feature of the Ball Lock Post will draw your attention