Mechanical pencil for writing and drawing.ISO colour coding.Non-slip rubber grip zone.Metal clip, push-button and tip.Pocket-safe thanks to retractable lead sleeve.Rigid, cylindrical lead sleeve, ideal for use with rulers and templates.Cushioned lead for high level of break resistance.PVC and latex-free eraser.Easily to refill with "12-a-go" Mars micro carbon mechanical pencil leads 250.