Record your most important thoughts with the concrete rollerball pen – made from hand-poured concrete! The weighted form makes sketching and drawing a pleasure with its elegant ridged body providing easy grip. With the ease of a rollerball nib you can effortlessly cement those light-bulb moments in time – whether it’s just a simple sketch or the next big idea. Material: high density cement, 316 stainless steel. Dimensions: L132, ø12.5mm, ink line 0.7mm (black ink). Ink cartridge is replaceable.