... one set. 2>ISO9001-2008 quanlity control 3>R22,R134a,R410 4>special size can be offered 5>selling by ... Used for the delivery of refrigerants R12,R22,R410 and R134a. Widely used in refrigerator, air conditioner,refrigeration equipments etc. ... 5.5 R12,R22 500 2500 11.5 5.5 R134a 600 3000 11.5 5.5 R410 800 40005. ... and the indexes are up to international and domestic standards. R134a charging hose