The end may be tapered but there si no sharp edge to cut the line or leader. The needle eye, true to its name, looks like the eye of a sewing needle. It doesn't bulge out the end. It is often used when big-game fishing and is strong and small enough to fit inside a bait rigged for trolling. The eyes of hooks can be turned up to provide more gap space or turned down toward the point for tying flies or tying on leaders.
Hooks come in different sizes.
For the novice, looking at all those numbers on the packages of hooks can get confusing. However, once you become aware of how the numbering system works, it will be easier to picture what size hook corresponds to what number. The smallest hook made is size 22, and hooks increase in size as they decrease in number to 1. Choosing a Hook Forget any notion of there being one all-around hook that can be used successfully for all types of fishing. The type of hook you need depends largely upon the mouth of the fish you want to catch - its size, shape, and structure.