Pieces 5 x 5 mm Square Solid Aluminum Radiator Vent Key Exhaust Valve Accessories, Almost Suitable for Most Radiators

[Packaging]: You will receive four exhaust valve keys. Since the product is lightweight and small, it can be easily lost. Four of them can meet your daily needs. [High-Quality Material]: Our products are made of high-quality zinc alloy. Compared to plastics, our products are more durable, stronger, and harder to break. [Easy to Use]: The operation is simple; just place the square key on the vent valve and turn it gently to vent the radiator for an extended period, which is very convenient. [Strong Heating Power]: It can prevent annoying noises in the heating system and increase heating power. Long-term use can reduce heating costs. [Wide Range of Applications]: The square cover fits most radiators and heaters. With this product, you can easily open the vent radiator equipment at home.