I don't have any reference for Harbor freight torque wrenches, but our torque wrenches are manufactured in a TUV and ISO certified facility located in Taiwan. The TW605 specifically is a pretty common style (all metal, stamped torque scale, locking end nut) so I understand the comparison on the exterior. My personal experience is that our wrenches are much heavier, have a much stronger click, and overall are just a better product. Harbor Freight has an interesting business model which sells cheap, allows for frequent replacement, etc. Some (possibly many) compromises need to be made for that to work. Gorilla aims to provide a higher quality part that will last longer and work better for the duration.