Caran D'ache 844: Mechanical-pencil Metal Fluo Yellow 0.7 mm (844.470) CARAN D'ACHE 844: Mechanical-pencil metal fluo yellow 0.7 mm Supplies Designed for discriminating taste Light weight aluminum bodies Wear resistant electrostatic powder coating in Classic and Fancy colors Pushbutton lead advance. Made in Switzerland Mechanical pencils use 0.7mm graphite leads and include an eraser under the pushbutton.