These are great, in my opinion. I had gotten a 0.7 & 0.5 & having different sizes makes for confusion if your not careful. They ended up somewhere in the house, lol, so now I have the 0.5 which I find is better to write with & a little stronger.Drama time... .It "does not" come with instructions, keep reading.I've read some reviews & the ones that come apart, you have to make it come apart, it doesn't do it by itself. It is hard to do & I've owned several over my lifetime to know. You shouldn't take it apart unless you know what your doing.Like some other reviews, if you drop the pencil, it can break the led (it is fragile & thin) & you have to live with it, I have.Drawback, occasionally I have to hand tighten the cone at the tip of the pencil. But not a big ordeal.Reloading is easy but it depends on how you do it. The led is very, very fine & refilling is something you'll have to face.For those who don't know, this is a mechanical pencil. Just like in your car, would you attempt to remove your radio? You don't want to start taking it apart when you have no idea what your doing.It used fine led that comes in the protective case; try & avoid dropping it.You reload by removing the cap at the top of the pencil, you push it to make the led come out (mine is silver).Next, remove the eraser & you'll see a small hole, that is where the led goes.Carefully put the led in, put the eraser back on, then the cap & your good to go.I gently open the led case, tap very little at a time, take some out & I'm good to go. However, there have been a time or two I've had to use a different approach.