Thanks Darrin. The last one is stainless steel with a titanium clip. The aluminum is 1 oz / 27 grams. The SS is 3.1 oz / 89 grams. And the Brass is 2.9 oz / 82 grams. All weights with converter and ink. The caps do not post. I was going for a slick minimalist look and external threads wouldn't look quite right.