Style I/M I/M = Industrial T = Automotive Series size 1/4 in. A = Aro U = Universal Match with other couplers and plugs of the same style & series.Product Features: Accessorize Great start-up kit for your air compressor tools Inflation Tools Dual foot air chuck tire gauge for tires Inflation adaptor tapered inflation nozzle Inflation needle for sports balls Blow Gun With Safety Nozzle Clean off work pieces your bench Frequently Needed Connectors Coupler, 6 plugs, 2 male couplings, female coupling