The 300ml Horn Refill is a replacement canister designed for use with compatible air horn systems. As a refill, it contains compressed gas to produce a loud, attention-grabbing sound when activated. The 300ml size indicates a compact, portable volume suitable for handheld or small air horn devices. This product is categorized under miscellaneous air horn accessories, suggesting it is a consumable component that restores functionality to an existing air horn unit.

This refill offers the benefit of **extended use** for your air horn without needing to purchase a completely new unit. It is ideal for **safety**, **emergency preparedness**, and **outdoor activities** where a loud signal is required, such as boating, sporting events, or hiking. The **compact 300ml size** makes it easy to store in a glove box, backpack, or emergency kit, ensuring you have a reliable **sound source** when needed. By using this refill, you maintain the **effectiveness** of your air horn for signaling or alerting others in various situations.