WIDE COMPATIBILITY ---- A/C can tap guage hose recharge for R134A R12 or R22 refrigerant refrigerant to vehicle or home air-conditioning, with highly working performance. PREMIUM QUALITY ---- R134A puncture type can tap, R134A low side quick are made of aluminium alloy, for high heat resistance durability and safety. EASY INSTALLATION ---- R134A gauge recharge hose has 90 degree Push & Lock coupler with auto shut off. Easy and convenient to use. Come with gauge for easily viewing during use and getting a correct charge. DIMENSION ---- 1/2” ACME female x 1/4” SAE male can tap opener, 13mm R134A low pressure quick coupler, thread: female low side R134a 13 mm quick coupler x male 1/4” SAE FL. PACKAGE INCLUDES ---- With 1/2” ACME puncture frezon can tap, recharge Hose with gauge and R134A low side quick coupler. Note: If the pressure gauge needle is not on 0psi, open the cover of the gauge and adjust the knob on the gauge before using.