T Steel R134 Retrofit Switch Adapter w/ 1 Female 3/8''T Steel R134 Retrofit Switch Adapter w 1 Female 3 8'' 24 Switch Port, 16mm Charge Port, Attaches to 1 4'' R12 Port 24 Switch Port, 16mm Charge Port, Attaches to 1 4'' R12 Port Must Remove Valve Core From Original R12 Port Before Installing Specifications Product Condition: New 100% brand new and high quality. The product is the same size as the original part, and replacement is simple. One year warranty, shipped within 1 2 days and delivered within 10