This is a Traditional Rollerball from woodpenpro.com . It's a pretty inexpensive kit, runs about $7 but you can usually get 20% off, so under $6. To be honest I'm not sure why I spent 3 hours on it. Kinda like putting lipstick on a pig. I actually like the dimensions of the kit, it's super long and slim (length is 6.625" and diameter is 0.453"). But the cap clicks on with the little plastic piece that is installed near the barrel. It is almost certainly going to fail prematurely, and can't be repaired/replaced by a non penturner. It's similar to the rollester cap, but the rollester you can just send another cap and your in business. I think if the cap brass was pre-threaded on one end to accept threads from the lower barrel (similar to the sketch pencil kit), it could be an awesome kit because it would be maximum length, slender, and reliable - but I guess then it wouldn't be as cheap. The black section piece is also flimsy plastic. Anyway, you get what you pay for. Enough bashing my creation, lol. The wood is black locust burl, which I think came out nice.