Complete A/C Gauge Set: ZKTOOL professional 4 valve automotive air conditioning diagnostic manifold gauge set includes a Four-channel High precision GAUGE, 3 color 5 FT hoses, 2 R1234yf quick couplers, 2 R134a & R404a quick couplers, 2 R410A R22a quick couplers,1/4'' to 1/2'' adapter, a R134A self sealing can tap,7PC Fuel Line Disconnect Tool,a valvecore wrech ect.The most comprehensive tool. Wider selection of vehicles and refrigerants: ZKTOOL automotive air conditioning diagnostic manifold gauge set has an additional 2PC R410A R22 Refrigerant adapter on top of the original R1234YF and R134A refrigerants adapter, so we have more vehicle models and refrigerants to choose from for Car Freon Charging and Evacuation，perfect for AC freon charging, evacuation, diagnostic check and recovery work. Extra large and colored dials with fahrenheit degree unit is easy to read, gauge rated 800psi (red) and 550psi (blue) max pressure. Sight glass design will help you see the flowing liquid refrigerant, when charging the refrigerant. Include 4 pieces extra long 5FT and high impact hose, thickening hose body with precise valve core depressor and 45 degree bend on one end for convenient access. Hose rated 600psi max max working pressure and 3000psi burst pressure. Precise movement with upgraded gauge shell, stands up to heavy use and accidental drops, all metal parts made from durable brass and aluminum materials. Great for your home garage or mechanic shop. Come with every thing you need for a efficiently ac charging work, The ZKTOOL AC R1234YF R134A Gauge Set is a multifunctional 4-valve manifold gauge set designed for automotive air conditioning diagnostics. Compatible with R1234YF, R134A, and R404A refrigerants, this set is ideal for AC freon charging, evacuation, diagnostic checks, and recovery work.