The TWSBI Vac 700R Fountain Pen is a clear-barrelled vacuum-filling pen with a smoke-coloured grip section and plunger cap. It features chromed metal trim with a matt metal pocket clip and the TWSBI logo on the cap. The pen has a polished steel nib, available in various sizes, engraved with TWSBI branding. Its vacuum-filling mechanism efficiently fills the barrel with ink in a single stroke. The mechanism seals near the nib when screwed down, providing leak protection. The pen measures 146.9mm long closed, 132.7mm long open, and 174mm long posted. It has a maximum barrel diameter of 15.9mm, with the grip section tapering to 10mm, and weighs 32g. Vacuum-filler pens cannot use cartridges. It comes gift-boxed and can be entirely disassembled for cleaning and servicing with included tools, though this feature is recommended for experienced users. Disassembly is at your own risk.