Uni Kuru Toga Advance Mechanical Pencil: Auto Rotating Leads Limited Edition - 0.5 mm - Ash Blue

Uni Kuru Toga Advance Mechanical Pencil is a design that allows seeing the overall structure such as spring inside the "Advance" and automatic core rotation mechanism. 

The Kuru Toga eliminates the problem of wearing lead through an ingenious lead rotation mechanism that continually rotates the pencil lead when writing. A spring-loaded clutch twists the lead incrementally every time you lift the pencil from the paper, which allows a uniform wearing of the lead to create a conical tip shape that provides a fine, consistent line.

Kuru Toga Advance features an updated "W Speed" mechanism, which rotates the lead twice as fast as standard Kuru Toga pencils so that the lead gets sharpened twice as quickly. The standard Kuru Toga pencils rotate the lead once every 40 strokes, while the Kuru Toga Advance rotates the lead once every 20 strokes. The Advance's mechanism also features metal parts for smoother, more reliable performance.

The Advance also features a sliding lead sleeve (guide pipe) that protects the lead. When writing, the lead gets shorter, the sleeve slides into the pencil, getting shorter along with the lead. This means writing continuously without clicking to extend more lead, all the way until the sleeve gets too short. The sleeve can be fully retracted when the pencil is not being used, protecting it from getting bent or poking a hole in the pocket or pencil case.