3/8 Outside Diameter x 1/4 Male Iron Pipe Male-Run Tee with 26005The 3 8 Outside Diameter x 1 4 Male Iron Pipe Male Run Tee with 26005 Captive Sleeve Run Tee is a type of compression fitting used in plumbing, gas, or fluid applications. This fitting allows for the connection of three separate lines: one with an OD tubing, one with a MIP male threaded connection, and a third outlet. It is typically used to split or join fluid or gas lines while maintaining a secure and leak free connection. Specification Details