The selection is poor. But worse than that the quality has been horrible. I made a beautiful roller ball for my wife, a Newport. A week later the cap wont screw on because the threads ripped out. She did not turn it hard, and I had noticed after assembly the cap was going on, but just not as smooth as I hoped for. I made myself a Newport and before assembly , there was metal flashing protruding from the center ring I had to trim. The mechanism on a Pencil I got from there quite a weeks after I gave her the pencil. Today I finished a "Comfort Pen" and found none of the ends match the diameter. I double checked , had my wife double check and I had the correct bushings, measured the diameter of the bushings, measured the diameter of the barrels, and they were correct to the bushings and according to the Rockler instructions. BUT...not to the hardware when I went to assemble! The instructions called out for a pen measuring 8.5 mm , 10.5 and 10.5 mm. BUT, the hardware was for a 7 mm. I could tell e few more stories about poor stuff from there...but I already feel stupid enough for buying there!