PRO USE 171 Matte Black Mechanical Pencil - 0.5mm Drafting Pencil for Artists, Engineers & Students | Smooth Writing & Comfort Grip | Perfect for Sketching, Technical Drawing & Note Taking

Equipped with the "Snork System" which allows adjustment of the length of the advanced core pipe and the ON/OFF function of the core cushion.

Specifications: ABS resin body with non-slip metal grip
Size: Overall length 145.2mm, maximum diameter 10mm, standard weight 23.1g