Milton S-314MKIT ColorFit Coupler & Plug Kit – 14 Piece, Original Version
M-Style: Milton M-Style, Colorfit M-Style, + Red Competitor Couplers/Plugs Are All Compatible. 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.