Pneumatic Elbow P (from "PL"): This often stands for "Push-Loc" or "Push-in," meaning it's super easy to connect. L (from "PL"): This tells you it's an L-shaped connector or an elbow . So, it lets your air tube make a neat 90-degree turn. 8: This number means it's made for tubes that are 8 millimeters wide on the outside. 02: This refers to the size of the screw-in part . Think of it like a bolt that you screw into another part of your air system. "02" usually means it has a 1/4-inch thread , which is a standard size