Instruction: Generate an answer to the question by utilizing the information contained in the document.

Input:
Question: how large is the tip mm?
Document: This is my second stylus, the first large crayon-styled stylus lasted 7 months before the tip cracked. While I liked the weight of this first stylus, I prefer the Pogo Stylus overall. Its length is more pen/pencil like, the diameter is more comfortable, and the tip is smaller and thus precise...or I can see the targeted area better. There was no way to attach the crayon-styled stylus to the pad.
The big fat Cosmonaut is the most super smooth gliding action for writing of all the stylus I have tried, but not very good for poking apps and tapping keyboards (have to keep repeating taps). Also, I have a small hand and it is too large to be comfortable. If you like writing with a dry eraser you might like it but it is so heavy it is cumbersome to try to write with - at least to me.
It is the best stylus out there. I wish that the rubber tip was a bit more sturdy, but, I do a lot of drawings, so it will wear out faster...
After less than 10 hours of use my tip developed a hole, Now I know why they give you an extra tip. Very dissapointing!
Great price. I use it for sketchbook pro, unlike other reviewers I have had no problems.Plus they send you a extra tip
Good for the garbage...came in the box with the tip already bent in and starting to rip. This will teach me to buy anything with less than 4 stars...
The Pogo Sketch Pro is a huge step above other stylus' I've used. I do wish it was capable of more precision for drawing. Perhaps a smaller tip.
I burned through a stylus tip in five minutes. Poor connection to the iPad causes you to press hard to get a line to show. Really a POS.
This Pogo Stylus is my first. Playing with it on the iPad with Paper 53 and only completing about six or eight drawings, the tip is already worn out. I like the shape and feel, though.
Not worth a penny. I had such high hope for it. Got it and tested it work terribly ...so change to replacement tip same thing. Keep having skipping. I returned it right away.
Answer: The tip and housing is about the size of the eraser end of a #2 pencil