That's a fixed hub, right? If so, the lockring is reverse-threaded and can be removed with a standard lockring tool or a screwdriver and a good whack to the right. The cog is standard-threaded, removable with a chainwhip.

If it's a freewheel, from here it looks like there's still a lockring that needs to come off, but it'd be standard-threaded (same as an English BB lockring, coincidently). Then the freewheel will thread off with the right freewheel tool.