The "lead breakage prevention" is effective only when the lead is not extending from the tip.

Body size 14.6 x 10.7 x 143 mm / weight 12 g.

The ability to write beautiful letters is considered important as a function required for a sharpener, especially among junior and senior high school students who use a sharpener on a daily basis for learning purposes.

The mechanism that rotates the lead twice as fast allows you to continue writing beautiful letters without changing the darkness or thickness.

The automatic lead rotation mechanism "Kurutoga Engine" of the "Kurutoga Standard Model" uses a 40-tooth gear so that the lead rotates once every 40 strokes. The automatic lead rotation mechanism of the "Advance" is equipped with a "W Speed ??Engine" that uses a 20-tooth gear that rotates twice as fast, so the lead rotates once every 20 strokes. By changing the gear of this automatic lead rotation mechanism, it is now possible to continue drawing lines that are about 12% thinner with HB and about 17% thinner with 2B.

The precisely machined parts suppress the vibration of the pen tip, which is unique to Kurutoga, for a stable writing feel. The automatic lead rotation mechanism rotates the lead every time you write, so the gear moves up and down every time the tip of the lead leaves the paper. By making the ferrule, one of the tip parts, a precisely machined metal part, vibration is suppressed and the writing feel is stable.

The lead breakage prevention mechanism makes it difficult for the lead to break, allowing you to concentrate. The slide pipe, which allows you to write without having to extend the tip of the lead from the tip pipe, prevents the lead from breaking when writing.