I am assuming you're asking about this brush tip. Sephora - you should really include something in your images to act as a comparison, whether it be a ruler or a finger or something...
Anyhow, the brush tip is not very big. It is perfect for making a catlike eye that is winged out. It's about the size of a q-tip head, but with a very pointy end of course. It's also a perfect combination of soft and firm, so it yields to the curvy lines you want to draw, but it doesn't splay out like a soft flat brush does, which allows you to achieve a great clean line. Hope this helps! I don't know exactly how long the overall brush (including the plastic part), but it's not super short of super long...it's a pretty basic length that would fit in most standard makeup kits/bags.

Obviously this brush was too large for someone to lift and pack into a box to ship.

It is not long... I was surprised to find that it is closer to a "travel" rather than full size. The brush is shorter than it appears in the photo.

8-9 inches