Uni's fabulous Kuru Toga solves a problem that afflicts all those that take their mechanical pencils very seriously. The angle of writing creates a chisel edge to the lead, which affects actual line width and tends to crumble off. The Kuru Toga engine rotates the lead every time the lead touches the paper, leading to even lead wear and creating a constant sharp point. Kuru Toga has been a sensation all over the world, and is one of our favourite products because it's genuinely innovative and it really works! Combined with Uni's 'nano-diamond' Nano Dia lead, it's a superb writing experience.