Features 1、Premium Material: Made of high quality aluminum alloy material, strong and durable, corrosion resistant and long service life. 2、Main Function: The dust cover can prevent dust or other debris from entering the fuel tank valve when diving. 3、Vented Design: The dust cover plug is exhausted, so the presence of high pressure gas will not trap the plug, making it difficult to remove. 4、Simple Operation: Having a fixed rope design, easy to install and replace, providing users a good using experience. 5、Product Size: Thread outer diameter is 2.3cm/0.9in, thread inner diameter is 1.4cm/0.55in, top cover diameter is 3.2cm/1.26in, height is 2.4cm/0.94in. Item Type: Scuba Diving Tank Valve Dust Plug Cap Product Material: Aluminum Alloy Weight: Approx. 34g/1.2oz Thread Outer Diameter: Approx. 2.3cm/0.9in Thread Inner Diameter: Approx. 1.4cm/0.55in Top Cover Diameter: Approx. 3.2cm/1.26in Height: Approx. 2.4cm/0.94in Package List 1 x Scuba Diving Tank Valve Dust Plug Cap