Engineered for all late model H-D using the stock filter with minimal clearance between the crankcase/sensor and the filter Allows you to easily get in that tight spot to crack the filter loose without slipping The small end also features a built-in drain plug wrench, making this your all-in-one oil change tool Engineered for all late model H-D using the stock filter with minimal clearance between the crankcase/sensor and the filter Allows you to easily get in that tight spot to crack the filter loose without slipping The small end also features a built-in drain plug wrench, making this your all-in-one oil change tool