The Gamakatsu Octopus Circle hook is a hugely popular hooks.  

This offset circle design is the perfect deepwater bottom fishing hook with paternoster ‘dropper-style’ rigs or normal boat fishing with cut baits. When using this hook anglers do not strike on the bite, rather the fish is allowed to run with the bait and as the line comes tight the hook will roll into the corner of the fish’s mouth. This is a great hook to use for ‘lazy‘ rigs fished from a rod holder as fish simply hook themselves.

It is popular across a wide range of sizes for so many fish species.  If you are chasing smaller estuary species, sizes 8, 6 and 4 estuary are ideal.  For bream and flathead, most people use sizes 2, 1 & 1/0.  The snapper fisherman ideally prefer use sizes 4/0, 5/0, 6/0.  Bigger Species fisherman targeting Mulloway and Kingfish mainly use hooks in the larger 8/0 size.  

This is an exceptionally versatile hook style and is also widely used as a light weight live bait hook for many species.