I can't find my pack of size 9's but I did find a pack of size 19's (yes, nineteen) and they list the lengths for all the different sizes of this style hook. In a size 9, the hooks are 3X long (which is why I nabbed them for streamers).

They're a TMC 109BL's. Down eye, 1X Fine, wide gape. Sizes 7-9 are 3X Long. Sizes 11-19 are 1X Long.

These are forged, black hooks. They're marked as being for dry flies, but the longer versions can still be used for a streamer though at 1X Fine, it'll be a pretty light streamer.