The TWSBI Classic comes with a benchmark piston ink-filling mechanism and has all detachable parts. Similar length but slimmer than its sister pen, the Diamond 580. This fountain pen has a glossy blue finish with an ink window and a stainless steel nib. It unscrews to open and the cap posts onto the barrel.
TWSBI's belief is that it is important to allow the user to disassemble and reassemble the pen and completely experience the traditional aspects of owning and using a fountain pen. These pens also come packaged with a wrench and silicone grease. Neither of these accessories are intended to be used immediately, as they are for long-term care and maintenance. Additionally, please use extra care if you choose to disassemble the nib and feed, as the feed is very fragile.
Warning: this pen should not be cleaned with any form of alcohol or acetone, or it will break down the plastic used in the pen.