For all your on-the-go pencil needs, this petite wooden barrel mechanical pencil from Japan fits the bill! Looks like a little wood-encased pencil, but it's refillable.

Measures approximately 1/4" diameter, 4 1/8" long. Wooden barrel with a clip for securing it. Takes 0.5mm lead (1 piece included). Made in Japan.

available. Please note eraser refills are NOT available.