MILTON 5-Piece A-Style ColorFit now offers a customized color-coded system that allows for easy matching of couplers and plugs, among the range of standard Industrial pneumatic air coupler quick connects. Great way to solve that annoying problem of potential cross-contamination between different air lines. By dedicating certain colors to different air lines, this will eliminate the risk of mixing a lubricated line with a dry air line which will prolong your applications and help to quickly finish any project. Each piece is coated with Anodized Green aluminum and heavy-duty steel sleeves to prevent scratches or dulling of the coupler and plug after use. Compared to Compared to Legacy ColorConnex A73458D.