ACME Studios' "Sing-Sing" 4 Function Pen by Adrian Olabuenaga

ACME Studios&39; "Sing-Sing" 4 Function Pen by founder Adrian Olabuenaga The pen features a black rollerball pen, an orange highlighter, a mechanical pencil using 0.7 lead, a stylus, and an eraser. It has metal barrels with hand-applied color images and metal-to-metal threading. The comfortable weight and shape Were Designed by Adrian Olabuenaga. The image scheme of "Sing Sing" alternates black and white stripes vertically on the upper pen and horizontally on the lower section.