For all of your editing/checking needs, the Tombow VP is more richly pigmented than most and features a strong core that can stand up to most sharpeners.
Tombow was founded in Japan by Harunosuke Ogawa in 1913. The brand is widely recognized by their dragonfly logo, as Tombow means 'dragonfly' in Japanese.
Made in Japan
Core: a firm but pigmented vermillion/prussian blue
Measures 7" long
Sold individually
Round barrel, normal diameter