Your Oil Easy Wrench is a terrific boon to changing an oil filter. Mine is an AirWolf mounted on the firewall, and there is no way I could easily get a socket wrench in that area.
Open ends are too long.
Your wrench, being precision cut as it is, fits on the filter blindly and it gives me enough leverage that I can remove the filter by hand. The explanation of how to calculate torque when the torque wrench is offset is a valuable insertion with the wrench. I like it so much that I bought an extra one for my AI so he wouldn't say bad things about my airplane when he had to change the filter. Before long, we were using it to remove the oil filters on almost every piston engine airplane that we service. We use it on a daily basis.