Manifold Gauge Set HVAC refrigeration system auto air conditioner repair tools brass AC Charging Hose good quality Connection:1/4SAE Brass body The plastic handle( zinc plating ) rubber ring shock absorber Selectable Refrigerants: R134A R22 R12 R502 R410A R404 R1234YF charging hole 2500PSI 3000PSI 4000PSI 36 "48" 60 "72" 96 "