Feature: 1. Application System: Bottle adapter fits for 1/4 in SAE thread. 2pcs adapter 1/4 in SAE female thread fit for LP automotive air conditioning connection and HD automotive air conditioning connection 2. For R134A: 3pcs AC retrofit fitting adapter set suits for R134A refrigerant bottle system, they are durable and has practicability to use for a long time. 3. Function: Golden air conditioner conversion adapter kit can convert high and low voltage, which is easily used in automobile air conditioning system. 4. Suitable For AC: Retrofit fitting adapter is suitable for high and low pressure conversion of air conditioners, has high strength and hardness, durable and easy to use. 5. Copper Material: Retrofit fitting adapter kit is constructed with copper to last under extreme conditions and for high heat resistance durability and safety. Specification: Item Type: Retrofit adapter parts Material: Copper Bottle adapter parts are for connecting 1/4 in SAE thread. 2 long adapters are with female thread 1/4 SAE. Package List: 3 x Retrofit Adapter Parts