An all-metal, three-function writing instrument with a rotary mechanism for quick switching. It combines a mechanical pencil with black and red ballpoint pens.
Features
Aluminum body with anodized finish and brass parts with chrome plating; the aluminum is recyclable.
Mechanical pencil: right-turn rotary advance and cap-slide knock mechanism.
Black and red oil-based ballpoint pens: left-turn rotary advance.
Uses BSP-100S ballpoint refills in black (#1) and red (#2), with 0.7 mm oil-based dye ink; eraser model 100CN.