Review on 🔧 Enhanced Performance Cummins Oil Filter Plug (W54313) for Optimal Engine Maintenance by William Sanchez

11 and 13 mm sockets are not to be found in this set. It is often recommended to use a 3/8" (9.5mm) or 1/2" (12.7mm) drive as the tool. Often this resulted in the drain plug being unscrewed. I prefer to switch my plugs to hex when they come out, but I can't always find a compatible hex plug. I've only used 11mm and 13mm square heads, but I'm sure others will come in handy in the future.