The Mustad 2330 Kirby Hook, often referred to locally as the "Sprat Hook", is a classic, long-standing pattern designed primarily for small baitfish applications. It is a general-purpose saltwater hook that has been a staple in tackle boxes for decades, particularly favoured for catching baitfish like piper, sprats, herring, and mackerel, or for light estuary fishing.

The "Kirby" shape is defined by its consistent round bend and a point that is offset (kirbed) to the side. This offset design significantly improves hook-up rates by preventing the hook from sliding flat out of the fish's mouth without catching.

• Kirbed (Offset) Point: The point is bent sideways relative to the shank. This aggressive angle ensures that when a fish takes the bait, the point is exposed and ready to catch flesh immediately, making it highly effective for small, quick-biting species.

• Tinned Finish: The hooks feature a "Duratin" or standard tinned coating. This provides excellent corrosion resistance in saltwater environments, keeping the points sharp and the shank strong even after repeated use in the ocean.

• Long Shank: The 2330 pattern typically features a medium-to-long shank. This makes unhooking small fish much easier, as the shank is accessible to fingers or pliers without swallowing the hook deep into the gullet.

• Ringed Eye: Equipped with a standard ringed eye, allowing for easy tying of standard knots (like the Clinch or Uni knot) even with slightly heavier leader lines used in bait rigs.

• Versatility: While designed as a "sprat" hook in smaller sizes, larger sizes of the 2330 pattern are often used for general bottom fishing or set-lines due to their robust, traditional design.