This is not the cheapest oil filter wrench available but in our estimation, it's the best one. This is the same filter wrench that BMW sells as a factory special tool.
This wrench is made by HAZET in Germany, one of the top tool manufacturers in the world. It has a 3/8" drive internally and externally, a 27mm hex.
There are two types of oil filter wrenches used on BMW motorcycles.
Please inspect your filter to see which filter wrench you need 12 dimpled or 14 flat.
This version is used for For OC619 and OC91 Filters