ColorConnex Coupler & Plug Kit (5 Piece), ARO Type B, 1/4 in. NPT, Green - A71456B COLOR MATCHING SYSTEM - Easily connect plugs and couplers with same color DEDICATED LINE USE - Ensures you never use a lubricated line for dry line applications, preventing cross contamination ARO INTERCHANGE - Type B in all green color PREMIUM MATERIALS - From the makers of Flexzilla. Made from steel and aircraft aluminum HEAVY DUTY APPLICATIONS - Use on professional jobsites, in automotive shops or at home in the garage