Universal Compatibility: Designed to fit a variety of refrigerant safety caps, this key supports both 410a and R22 refrigerants. It's a versatile, essential tool for HVAC technicians, equipped with multiple interfaces to engage different locking mechanisms. Construction: Crafted from materials, the universal locking key withstands frequent use and harsh conditions. Its robust design guarantees long-lasting performance and reliability in any HVAC maintenance scenario. Multi-Key Functionality: Featuring multiple key interfaces, this tool efficiently engages with locking mechanisms on refrigerant safety caps. It serves as a comprehensive solution for diverse HVAC systems, enhancing service efficiency. Portable and : This compact and tool is easy to carry, fitting seamlessly into toolkits and technician bags. It's also designed to attach to a keychain, ensuring it's always handy during maintenance or service calls. Essential for HVAC Professionals: An indispensable tool for ensuring safety, security, and efficiency in HVAC operations. Compatible with all Novent NG/NP/NPE Euro and NS universal locking caps, it prevents unauthorized access with tamper- features. Colour:Silver Material:copper Package Contents: 2 x Refrigerator Safe Cover Key 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.