Sockolet is used for 90 degree self-reinforcing branch accessories for pipe line fitting. As its names represent how that will connect to the run pipe (header pipe). Sockolet is a type of self-reinforced branch fitting developed by a company called Bonney Forge. And this is suitable for small bore branch connection pipes up to 1.5 inches. This is available in 02 varieties, these ar... https://www.growmechanical.com/complete-dimension-charts-of-sockolet-fitting/