* Incl 3 spare blade* Blade made of cold-rolled strip steel, hardened and tempered, locked in the cast by a screw* ABS material plastic case and clip* HB lead hardness* High-resistance mechanical pencil* 3x longer usage than standard wood pencil* For all types of surfaces* Octagonal section to avoid rolling* Easy and comfortable grip* For transferring a measured angle to a work piece for cutting or machining* Stock of pressurised zinc alloy