- Designed for both professional car technicians and automotive enthusiasts, our air conditioning connection caps are essential for precise repairs and maintenance. - High-quality construction protects service ports from dirt and damage, ensuring reliable air conditioning performance across various vehicle models. - This comprehensive 20-piece R134A service connection cap set is built for durability and compatibility, keeping your vehicle's air conditioning system secure. - Available in six sizes (13mm, 13.5mm, 14mm, 16mm, 17mm, and 17.5mm), each cap features an integrated rubber seal that effectively prevents leaks while resisting pressure and corrosion. - Use scenarios include: 1. Routine air conditioning maintenance to maintain optimal performance and avoid costly repairs. 2. DIY repairs for enthusiasts looking to enhance their vehicle's air conditioning system reliability. 3. Professional use in garages to ensure all service ports are properly protected during maintenance tasks. - Our air conditioning connection caps offer a practical solution for maintaining the integrity of your vehicle's air conditioning system, ensuring it operates efficiently and effectively.