Main Usage -- As a connector for car oil pan ATF filling tool. Thread size : M14*1.5/Compatibility -- It’s compatible with Mini Cooper Steady Fluid Transfer--Must use with the volume controller gun with hose trigger, which enables steady fluid transfers without splash. Easy Push-On Coupler Design-- For wide range of vehicles to refilling ATF fluid efficiently and quickly. Please refer to the picture and confirm the detail sizes before purchasing. This adapter is suitable with FIRSTINFO ATF dispenser for best result.