A refill for Troika Construction Ballpoint Pens.

Toika Square ballpoint pen for special tasks!

Toika Square ballpoint pen for special tasks!

Troika Contruction ballpoint pen also includes scale rulers, level, two screwdrivers and a stylus for a touch screen.

Troika Contruction ballpoint pen also includes scale rulers, level, two screwdrivers and a stylus for a touch screen.

Troika Contruction ballpoint pen also includes scale rulers, level, two screwdrivers and a stylus for a touch screen.

Troika Contruction ballpoint pen also includes scale rulers, level, two screwdrivers and a stylus for a touch screen.