Mechanical Pencil .5mm by Alvin Grippy
Ideal for beginning or professional draftsmen or engineers. Premium construction features rubber finger grips for comfort and control an oversized eraser in the cap and a spring-loaded mechanism that advances lead 1/8" with each click of the cap. Available in 0.5mm and 0.7mm. Color-coded bands denote line width. Good for general writing. Blue band.