Love these because you don't need to remove cap to get at eraser, and they're
cheap. I've had one where the clutch stopped working, so they may not be very
durable. Still, a very nice pencil for the price.
The lead sleeve has to come into contact with the paper in order to advance the
lead, and then only a very small bit of lead is advanced. Otherwise it's a nice
looking pen with a solid feel, but of little use to me.