Enhanced Protection for Your AC: These 1/4inch thread size locking caps are designed to securely lock in place, effectively preventing any unauthorized access or accidental misuse that could disrupt your cooling system's efficiency. Prevent Refrigerant Loss: By using these robust locking refrigerant caps, you can avoid potential damage and that your air conditioning system remains fully operational, maintaining its performance and extending its lifespan. Robust Construction: Each cap is crafted to provide a reliable barrier against refrigerant leakage, ensuring that your system is well-protected against environmental factors and tampering, thus preserving the integrity of your HVAC system. Colour:Red Material:brass Package Contents: 2 x Air Conditioning Locking Cap Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.