These pens are beautiful and of high quality. The click action is very smooth and the clips are simple yet it blends perfectly with the pen. You don't have to assemble the click top therefore this is a very easy pen to assemble. This is very long barrel so you need to have a long drill bit and a drill press with 4 ½ inch spindle travel or mount a drill bit on the tailstock of your lathe. We also sell a 3/8" x 6" drill bit that works perfectly.