ColorConnex X-Flo Coupler, Industrial Type D, 1/4 in. FNPT, Red - A73416D 25% MORE AIR FLOW - Compared to standard couplers PUSH-TO-CONNECT - Easily attach your air tools COLOR MATCHING SYSTEM - X-Flo couplers are compatible with associated ColorConnex plug types DEDICATED LINE USE - Ensures you never use a lubricated line for dry line applications, preventing cross contamination INDUSTRIAL INTERCHANGE - Type D in all red color