The Snap-on Polartek Dual A/C Machine, No. EEAC334, is designed for recovering, recycling and recharging vehicle A/C systems. The unit handles both R-134a and R-1234yf refrigerants, with dedicated 30-lb refillable tanks for each to reduce the risk of cross-contamination. This machine features a quick setup software guide and 10" graphic touchscreen for easy navigation. The large status light allows techs to monitor progress while doing other jobs. The unit also offers large wheels for improved portability, vehicle database, an on-board printer and two sets of 120" service hoses.