The Kuru Toga Advance series comes with 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 Advance series also features a metal sliding lead sleeve that guard the lead when you write. The sleeve will slide as the lead gets shorter or longer. The sleeve can also be fully retracted when the pencil is not being used.
The pencil of the gods,
The pencil of the gods, I love this thing.
Excellent mechanical pencil
I love the standard Uni Kuru Toga pencil, but the advance is definitely a step up. I really like the retractable lead sleeve and that it also slide into the pencil as the lead wears down while you write. It might not look like a "high end" pencil, but neither does it look cheap. It's got a reasonable ergonomic grip, but to me, doesn't feel quite as good as the standard Uni Kuru Toga - but there isn't that much difference. I like it a lot.
Matched with a good lead,
Matched with a good lead, this mechanical pencil is great for all day writing