Features: , Solid brass construction can be used in a toolbox for decades. Useful charging adapters and repair tools (such as vacuum pumps) can be adjusted between R12, R22, R134a and R1234yf systems. Product Parameters:Item: R1234yf adapter with spoolMaterial: Brass1: 1/4" SAE female FL x 1/2" ACME lh-male adapter2: 1/2" ACME LH female x 1/4" SAE FL male. Replacement c/w spool 1/2" ACME LH thread (left hand) is dedicated to R1234yf system. Package List: 2 * R1234yf adapter with spool. Notes:1. Due to various factors such as display brightness and light brightness, the actual color of the product may be slightly different from the picture on website.2. Please allow slight deviation between the data and manual measurement.