I got this as a gift. The slightly concave rubberized grip is very ergonomic.
You can write for hours without fatigue. The pen has a nice heft to it, and is
well balanced. I do not like to use the eraser in my mechanical pencils, esp.,
when you have such excellent block erasers available. Think of the built in
eraser as an emergency eraser.
Most of the sharpeners like the Dahle 166 sharpen well but feature teeth that
mangle the finish of the pencil. I was looking for a sharpener that is well
built and would keep my Mitsubishi Uni's looking good. The KH-20 is a superb
sharpener. The push the red button on the crank to toggkle between a sharp or
blunt point. The crank mechanism is sturdy and very smooth with no perciptable
play, the jaws are made of rubber coated grips that work well with round or
hexagonal pencils. The spring that pushes the jaw is much better and stronger
than more expensive sharpeners.
For pencil affectionados I say dont hesitate this the best sharpener hands down.