Purchased for my son, he gets hand fatigue sometimes, he says this helps I purchased this in both the .9 and ,7.The only thing I don't like about this product is that I haven't found the erasers for sale in an individual pack. Crossing my fingers they come available so I don't have to purchase new mechanical pencils when the time comes that he has used the erasers up.
Rating: [5 of 5 Stars!]