Ballpoint pens didn’t always write this smoothly. Traditional versions used thick, sticky ink - but Anterique uses a special ultra-low-viscosity oil-based ink (called Mach Ball ink) that flows easily and feels effortless on the page. This pen offers retro styling, but with a delightful and consistent writing experience.Because the ink is so free-flowing, it needs a precisely engineered tip to keep everything controlled. Anterique pens feature a finely crafted tip with a tiny built-in spring that regulates the ink as you write. The result is a super smooth glide and a sharp, clean 0.5 mm line without smudging.These pens are a miniature version of the popular retro pen from Anterique. Also, they also fit perfectly in Anterique Scribble notebooks! Only 100mm in length (3.94") Equipped with ultra-low viscosity oil-based ink (Mach Ball ink) Ultra-precisely machined 0.5mm ball tip Knock-type Retro design Comes in color combos to match your personal style Made in Japan