Convenient tire pressure relief device from ALL-TOP. It is an automatic valve that allows you to quickly and accurately set the correct tire pressure without the need for a pressure gauge. The device is simply screwed onto the thread of the nipple instead of the protective cap. It has a scale with the required pressure setting. After installation, the valve will automatically bleed off excess air to the set level. For example, this is very convenient when preparing for a trip off-road or sand. The valve itself is made of durable brass and is designed for high pressure. It works reliably in all weather conditions, not afraid of rain, snow, sun and frost.