Sculptor Agelio Batle makes these unusual implements that are equally an object of art and a functional drawing/writing tool. Each one was meticulously hand crafted in his San Francisco studio. First, he carves an original design in clay. With intense pressure, carbonaceous graphite (same material in pencils) and smudge-resistant compounds are fused into a reproducible form using a proprietary technique that Batle invented. Finally using delicate carving and traditional finishing techniques, the piece is completed. All their surfaces can draw and the graphite will resist smudging onto your hand. With daily use they should last 7 to 9 years.