Compatible with R12 R22 R134A R502; Durable Brass, Aluminum, PVC, Plastic Construction; Large 2-5/8 in. Gauge is easy to read; Blue Low gauge: 0-350 psi Red High gauge: 0-500 psi 3 Color-coded Freon service charging durable PVC hose: 600PSI Burst 3000PSI Max. W.P.; Overall length 5 FT; Blue for low, red for high, yellow for charging. Include: 1pc Manifold with 2-5/8 in. gauges; 3pc PVC charging hoses; 2pc Quick couplers: for High/Low fittings(Red and Blue); 1pc Puncture style can tap; 1pc Self-sealing can tap; 1pc ACME adapters; 1pc Valve core; 1pc Plastic carry case included.