Staedtler Graphite 777 Drafting Mechanical Pencils 5 pk, 0.5 mm widths (Pack of 5 Pencils) Mechanical pencil for writing. (Pack of 5 Pencils) Staedtler Graphite 777 mechanical pencils are an excellent value for money pencil with the high quality that you expect from a Staedtler product. The rubberised barrel has a frosted transparent design and underneath the cap is an extra large eraser. The Staedtler 777 pencil uses 0.5mm lead and is in available in Five vibrant barrel colours, and is supplied with HB lead. It can be refilled with Staedtler 0.5mm lead or any other pencil lead from our wide range of branded 0.5mm lead.