Normally, when you use a mechanical pencil, the lead wears down on the writing side first, so the lead gets progressively scratchier and sharper as you use it. Then, you have to rotate the pencil or just accept that your writing will have an inconsistent width and feel. The innovative Uni Kuru Toga lead advance system
Uni Mechanical Pencil Kurutoga Pipe Slide Model 0.5mm, Black Body (M54521P.24) : Office Products
Mechanical Pencils – Page 3 – St. Louis Art Supply
Kuru Toga, Mechanical Pencils
Mechanical Pencils – Page 3 – St. Louis Art Supply
Uni Kurutoga Mechanical Pencil Standard, 0.3mm, Black (M34501P.24) : Office Products
Uni Kuru Toga Mechanical Pencil, 0.3 mm, Black
Uni Kurutoga Mechanical Pencil Standard, 0.5mm, Blue (M54501P.33) : Japanese Mechanical Pencils : Office Products
Uni Kuru Toga Advance Mechanical Pencil - 0.3 mm - White
Mechanical Pencils – Page 3 – St. Louis Art Supply
Uni Kuru Toga Mechanical Pencil, 0.3 mm, Black
Uni Mechanical Pencil Kurutoga Pipe Slide Model 0.5mm, Black Body (M54521P.24) : Office Products