ColorFit by Milton Coupler & Plug Kit - (A-Style, Green) - 1/4" NPT, (5-Piece) A-STYLE: Milton A-style, ColorFit A-style, + green competitor A couplers/plugs are all compatible!. DURABLE: Scratch- steel design in an anodized coating for optimal wear vs. aluminum sleeves. EASY MATCH: Use color to distinguish between air lines (e.g. high pressure vs. low pressure).. COLOR: Green to Green matching - (A/ARO) air coupler/plug fittings, easy push to connect.. INCLUDES: 3 Male plugs, 1 Female plug, + 1 Female coupler (all 1/4 NPT) S-305AKIT